You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to cancel my reservation due to heavy rainfall at my destination location, can you please help me out with that?

ASSISTANT: Sure, I will help you with cancellation.

USER: Thank you for accepting my request.

ASSISTANT: May I know your name?

USER: Myself John Miller.

ASSISTANT: Please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, sorry there is no reservation found on your name in our system data.

USER: That's ok, no problem. Anyway thank you for checking out.

ASSISTANT: Thank you for visiting us.