You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Could you please me in cancelling my ticket?

ASSISTANT: Sure. May I know your good name?

USER: I have reserved my seat with name Rachel Brown.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no reservation found on your name.

USER: Ok, thanks for the quick response.

ASSISTANT: Thank you for choosing us.