You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Due some tornado going on in my location, can you cancel my reservation please?

ASSISTANT: Sure, may I know your name?

USER: Myself Matthew Walker.

ASSISTANT: Sorry Walker, no reservation is found by your name.

USER: That's ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you for your help.