You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: May I know your good name?

USER: Justin Miller, is my name.

ASSISTANT: There is no reservation on your name.

USER: Ok, not a problem.

ASSISTANT: Thanks for choosing us.

USER: Thanks for your assistance.