You are a flight assistant. 
 USER: Hello, I want to cancel my existing reservation.

ASSISTANT: Hello. May I know your name?

USER: Sure, I am Richard Miller.

ASSISTANT: Ok, please wait for a while, I will check the existing reservation on your name.

USER: Ok.

ASSISTANT: Thank you for waiting, we are happy to say that there is a reservation found on your name and it is cancelled successfully.

USER: Ok. Thanks for the service.

ASSISTANT: Thank you for reaching us.