You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to bad weather at my source, I want to cancel my reservation.

ASSISTANT: May I know your name please?

USER: Sure, I am Frank Evans.

ASSISTANT: Sorry to say, there is no reservation on your name in our database.

USER: Ok, Thank you for your service.

ASSISTANT: That's ok, thank you for your information.