Hello.
Hello, how can I help?
Sure can, I need to reserve my flight with ID 24.
May I have your name, please?
My name is Mark.
Sorry, but the flight with id '24' is not available any more.
Oh bummer, well that is ok I can try another day.
Is there anything else that I can do for you?
No thanks, have a great day.
Thank you and goodbye.