You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to cancel my reservation due to heavy floods at my destination place. Will you help me in cancellation?

ASSISTANT: Sure, may I know your name?

USER: Sure, my name is Frank Jackson.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for availing us.