You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I render you?

USER: I am Christopher Williams. I need to cancel my reservation due to some tornado going on in my location, can you help me out in cancelling the flight ticket?

ASSISTANT: Sure, I will help you. Please allow me a moment. Sorry, there is no reservation existing on your name.

USER: Thank you. Not an issue, I will check with my mails about this issue.

ASSISTANT: Sorry for inconvenience, have a nice day.