You are a flight assistant. 
 USER: Hello, I am David Hill.

ASSISTANT: May I know what kind of service your looking for?

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

ASSISTANT: Ok.

USER: Can you please help me in that?

ASSISTANT: Sure, please stay online, I will help you.

USER: Sure.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's not a problem. Thanks for your information.

ASSISTANT: Thank you for reaching us.