You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: Can you please cancel my reservation, due to an emergency?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name?

USER: My name is Christopher Lopez.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a reservation on your name, shall I cancel it?

USER: Ok, proceed.

ASSISTANT: Your reservation has been cancelled.

USER: Thank you for cancelling my reservation.

ASSISTANT: Thank you for choosing us.