You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you now?

USER: Actually, I want to cancel my reservation due to some business meeting postponed, can you please help me in this intent?

ASSISTANT: Sure, I will help you with that. May I know your name please?

USER: Sure, my name is Andrew Davis.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, no problem. Thank you for your valuable time.

ASSISTANT: Thank you for approaching us, have a nice day.