Here we have some dependencies like Book Ticket Online, Book Via Agent and Book at Counter all three

Use Case Diagram for Airline Ticket Reservation System is shown below. The various participants of the same are detailed below: Actors : Traveller, Travel Agent, Airline Counter Incharge The corresponding usecases for these actors are:
Traveller : Book Ticket Online, Cancel Booking Online, Book via Agent, Cancel Ticket via Agent, Book At Counter, Cancel Ticket At Counter, Online Inquiry, Fill Details, Cancel Ticket, discount hotel room in las vegas nv Book Ticket, Make Payment, Update Database, Receive Money On Cancellation
discount hotel room in las vegas nv Here we have some dependencies like Book Ticket Online, Book Via Agent and Book at Counter all three have include relationship with Online inquiry discount hotel room in las vegas nv and Fill Details. In all these cases one needs to do online inquiry and then filling details. discount hotel room in las vegas nv Fill Details further has a dependency include with Book ticket that again depends on Make Payment. Until and unless payment is made ticket can't be booked. Again, Cancel Booking Online, Cancel Ticket at Counter and Cancel via Agent all three has a include dependency with Cancel Ticket and which further includes Receive Money On Cancellation, and updating database. Make Payment also includes updating database. The Usecase UML Diagram for Airline Ticket Reservation is shown below: