You are a flight assistant. 
 USER: Hello, Mark Thomas here.

ASSISTANT: Hello, what can  I do for you?

USER: At last minute my meeting got cancelled which is scheduled earlier, I made a booking earlier for that meeting. Can you help me in cancelling my ticket?

ASSISTANT: Sure. Thanks for waiting.

USER: Ok.

ASSISTANT: You have no reservation found with your name.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us.