UseCaseID:		Cancel Reservation
Goal In Context:		A customer wishes to cancel a reservation.
Scope:		Airline Reservation System (ARS)
Pre-Condition:		A reservation has already been made. Actor has successfully navigated to the main options screen.
Success End Condition:		The selected reservation has been cancelled.
Failed End Condition:		The selected reservation has NOT been cancelled.
Primary Actor:		Customer
Trigger Event:		Selects the "Cancel Reservation" option.
Main Success Scenario
Step	Actor	Action Description
1	Customer	Selects the "Cancel Reservation" option.
2	ARS	Displays a screen with an input field for a reservation number.
3	Customer	Enters a reservation number and clicks the "Submit" button.
4	ARS	Displays the details of the reservation.
5	Customer	Selects the "Process Cancellation" option.
6	ARS	Displays the main options screen. The message "Reservation Successfully Cancelled" is also displayed.
Scenario Extensions
Step	Actor	Action Description
2.a	Customer	Selects the "Cancel" option.
2.a.1	ARS	Displays the main options screen.
3.a	Customer	Selects the "Cancel" option.
3.a.1	ARS	Displays the main options screen.
5.a	Customer	Selects the "Abort" option.
5.a.1	ARS	Displays the main options screen.
Scenario Variations
Step	Actor	Action Description
None