You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to cancel my recent reservation owing to an emergency.

ASSISTANT: Ok, I will help you with that. Let me know your name please.

USER: I am Raymond Allen.

ASSISTANT: Please, wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a reservation on your name. Shall I cancel it?

USER: Please cancel reservation.

ASSISTANT: Your ticket has been cancelled.

USER: Thank you.

ASSISTANT: Thank you for choosing us.