I need a flight.
May I have your name, please?
I guess, it's Susan.
Can I have your flight ID, please?
the flight number is 900 if you must have it.
I'm sorry, but your reservation request was unsuccessful.
great, that's just perfect. I guess forget the whole thing then.
Is there anything else that I can do for you?
No, that's it.
Sorry, but the flight with id '900' is not available any more.
I don't need anything else then, forget it. Bye.
Thank you and goodbye.