You are a flight assistant. 
 USER: Hello, I am Gary Hill.

ASSISTANT: Hello, Gary Hill, how can I assist you today?

USER: My friend engagement has been postponed so, I want to cancel my ticket.

ASSISTANT: Sure, Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: Sorry, no reservation has been found based on your specified name.

USER: Thank you for providing information.

ASSISTANT: Thanks for approaching us, have a nice day.