You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, we are glad to serve you.

USER: I am Christopher Smith. I want to cancel my recent reservation due to the ongoing tornado at my destination.

ASSISTANT: Sure, please wait a moment, let me check a reservation and revert to you.

USER: Sure.

ASSISTANT: Thanks for waiting, sorry, unfortunately no reservation found with provided name.

USER: Ok, No issues.

ASSISTANT: Thanks for your interest, have a great day ahead.

USER: Thank you.