You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: Due to heavy rainfall in JFK, I want to cancel my reservation.

ASSISTANT: Sure, hold on for a moment.

USER: Sure.

ASSISTANT: Can I know your name?

USER: Kenneth Young, here.

ASSISTANT: I'm sorry Kenneth, there are no reservations matching with your name.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you.