It specifies the activities that the system should perform. That is, it defines the services that the user expects from the system or the services that the system should perform.
    The functional requirements of the flight system are as follows.

 






1. Details about the airline should be available. 
2. User details must be changeable. 
3. Ticket details should be available. 
4. You need to know the details of the payment. 
5. Must be able to issue a cash receipt. 
6. Must be able to build a booking note. 
7. The service must be available over the Internet. 
8. Payments must be made online. 
9. Passenger details must be available.
10.Passenger details must be changeable. 
11.Login name and password must be changeable. 
12.Flight details must be available.
13.Seating details should be available. 
14.Prices should be changeable. 
15.Temporary reservations should be possible. 
16.Reservations must be removable or modified. 
17.Older passenger details should be available.