Hello, my name is Susan, Flight ID 131
Sorry, but the flight with id '131' is not available any more.
What does it mean to be unavailable? Does it mean that it truly is unavailable? Perhaps you should try again and realize that life is not about unavailability, but about everything being truly accessible when you want it to be.
Sorry but this flight is already taken. Is there anything else I can do for you?
The flight ID is 691.  Are you sure? please double check, young grasshopper because we all make mistakes in life.
The flight is available. Should I reserve it for you?
Please.
Right, your flight is now reserved!