You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Timothy Moore.

ASSISTANT: How may I assist you?

USER: I had planned to go on a vacation, but it was cancelled. Can you cancel my recent reservation?

ASSISTANT: Sure. Sorry Timothy, no reservation has been found on your name.

USER: That's ok. Thank you for your help.

ASSISTANT: Thank you for using our services.