You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Karen Harris.

ASSISTANT: How may I be your helping hand?

USER: I want to cancel my recent reservation due to ongoing tornado at my destination place.

ASSISTANT: Ok.

USER: Can you please help me with that?

ASSISTANT: Sure, wait a moment.

USER: Sure.

ASSISTANT: Thanks for your time, we found a reservation on your name. Shall I cancel it?

USER: Ok, proceed to cancellation.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you for cancelling my ticket.

ASSISTANT: Thank you for approaching us.