• Order

• Get room number
• Get order time
• Get order date
• Get delivery time
• Get delivery date
• Get item number
• Get number of items ordered
• Get employee ID
• Get comments

1. Get room number
2. Get order time
3. Get order date
4. Get delivery time
5. Get delivery date
6. Get service item number
7. Get number of items ordered
8. Get employee ID
9. Get comments

• None

• food order - instance to be updated in data store "Fees"
• movie order - instance to be updated in data store "Fees"
• wake-up order - instance to be updated in data store "Fees"
• Status message to user

• None

• Adds an item to invoice's food order, movie order, or wake-up order. Adds the cost of the item to the present total. It returns an status message to the user (successful/unsuccessful).

if input(s) from staff are syntactically incorrect then
   Report this problem
else 	
   input_ok = true
   Attempt to read an invoice with given room number from data store
      "Invoices"
   if this attempt fails
      Report there is no invoice with given room number
   else 
      Attempt to read "fee cost" with given "item number" from data store
         "Fees"
      if this attempt fails
         Report there is no "fee cost" with given "item number"
      else 
         Increase the invoice's "total bill" by the "fee cost"
         Send the resulting invoice back to update the data store "Invoices"
         if input_ok then
            Create an order with time ordered, date ordered, delivery time, 
               delivery date, comments, item number to be as given in the 
               input from staff
            Attempt to add the resulting order to data store "Room Service"
            if attempt fails
               Report this problem
            end if
         Report successful
         end if
      end if
   end if
end if 

• Order

• Get room number
• Get item number
• Get delivery time
• Get delivery date

1. Get room number
2. Get item number
3. Get delivery time
4. Get delivery date

• None

• food order - instance to be removed from data store "Fees"
• movie order - instance to be removed from data store "Fees"
• wake-up order - instance to be removed from data store "Fees"
• Status message to user

• None

• Deletes an item from the invoice's food order, movie order, or wake-up order. Subtracts the item cost from the present total. It returns an status message (successful/unsuccessful).

if input(s) from staff are syntactically incorrect then
   Report this problem
else
   input_ok = true
   Attempt to read an invoice with given room number from data store
      "Invoices"
   if this attempt fails
      Report there is no invoice with given room number
   else 
      Attempt to read "fee cost" with given "item number" from data store
         "Fees"
      if this attempt fails
         Report there is no "fee cost" with given "item number"
      else
         Decrease the invoice's "total bill" by the "fee cost"
         Send the resulting invoice back to update the data store "Invoices"
         if input_ok then
             Attempt to delete an "order" with given delivery time, delivery 
                date and item number from data store "Room Service"
             if attempt fails
                Report there is no order with given delivery time, delivery 
                   date and item number   
             end if
         Report successful                
         end if
      end if
   end if
end if

• Order

• Get room number
• Get delivery time
• Get delivery date
• Get service item number
• Get number of items ordered
• Get employee ID
• Get comments

1. Get room number
2. Get delivery time
3. Get delivery date
4. Get service item number
5. Get number of items ordered
6. Get employee ID
7. Get comments

• None

• food order - instance to be updated in data store "Fees"
• movie order - instance to be updated in data store "Fees"
• wake-up order - instance to be updated in data store "Fees"
• Status message to user

• None

• Modifies information associated with a food order, movie order, or wake-up order. It returns an status message (successful/unsuccessful).

if input(s) from staff are syntactically incorrect then
   Report this problem
else 	
   input_ok = true
   Attempt to read an invoice with given room number from data store
      "Invoices"
   if this attempt fails
      Report there is no invoice with given room number
   else 
      Attempt to read "order" with given room number from data store
         "Room Service"
       if attempt fails
         Report there is no order with given room number
       else 
         if input_ok then
            if staff input included delivery time then
               Replace the order's delivery time with the one given in 
                  input
            end if
            if staff input included delivery date then
               Replace the order's delivery date with the one given in 
                  input
            end if
            if staff input included number of items then
               Replace the order's number of items with the one given in 
                  input
            end if
            if staff input included comments then
               Replace the order's comments with the one given in input
            end if
         end if
      end if
      Report successful
   end if
end if 

• Order

• Get room number

1. Get room number
2. Get comments

• None

• food order - instance to be updated as completed
• movie order - instance to be updated as completed
• wake-up order - instance to be updated as completed
• Status message to user

• None

• Updates an order as being completed in field comment in data store "Order" if the order exists. Otherwise returns an status message (unsuccessful).

if input(s) from staff are syntactically incorrect then
   Report this problem
else 	
   input_ok = true
   Attempt to read an invoice with given room number from data store
      "Invoices"
   if this attempt fails
      Report there is no invoice with given room number
   else 
      Attempt to read "order" with given room number from data store
         "Room Service"
       if attempt fails
         Report there is no order with given room number
       else 
              ?????
       end if
       Report successful
   end if
end if 

• Search by

• Get room number

1. Get room number

• None

• food order - instance to be returned to user
• movie order - instance to be returned to user
• wake-up order(s) - instance(s) to be returned to user
• status message to user

• None

• Search for corresponding information associated with specified room number. Returns the food order, movie order and wake-up order information for the desired room.

	
if input(s) from staff are syntactically incorrect then
   Report this problem
else 	
   input_ok = true
   Attempt to read an invoice with given room number from data store
      "Invoices"
   if this attempt fails
      Report there is no invoice with given room number
   else 
      Report the resulting "invoice" to the staff
      Report successful
   end if
end if 

• Search by

• Get delivery time

1. Get delivery time

• None

• food order(s) - instance(s) to be returned to user
• movie order(s) - instance(s) to be returned to user
• wake-up order(s) - instance(s) to be returned to user
• status message to user

• None

• Search for information corresponding to the delivery time inputted.

if input(s) from staff are syntactically incorrect then
   Report this problem
else 	
   input_ok = true
   Attempt to read an order with given room number from data store
      "Room Service"
   if this attempt fails
      Report there is no order with given room number
   else 
      Report the resulting "order" to the staff
      Report successful
   end if
end if