You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to ongoing tornado at my source point. Can you help me with that?

ASSISTANT: Sure, may I know your name?

USER: I am Williams Hall.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you for your information.