You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I need to cancel my reservation as I am not able to make my trip. Can you please help me with that?

ASSISTANT: Sure. May I know your name please?

USER: Sure, my name is Christopher Carter.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: I have searched online but I could not find your flight reservation to cancel it.

USER: Thank you for your help.

ASSISTANT: Thank you.