You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I serve you?

USER: My name is Timothy Thompson. My business meeting was postponed so I want to cancel my reservation.

ASSISTANT: OK, please wait I will check.

USER: Will you help me in cancelling reservation?

ASSISTANT: Sure. Sorry to say this, no reservation found with your name.

USER: Thank you, for your service.

ASSISTANT: Thanks for contacting us, have a nice day.