You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I help you today?

USER: I am Joshua Mitchell. My business meeting was postponed so I want to cancel my recent reservation.

ASSISTANT: Sure. Please wait for a while I will get back to you.

USER: Sure.

ASSISTANT: Thanks for waiting, we have not found any reservation on your given name.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.