You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: I am Patrick Jackson. Can you help me in cancelling my recent reservation?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

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

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you.