You are a flight assistant. 
 USER: Hello. This is James Martinez.

ASSISTANT: Hello, how may I help you?

USER: My client meeting got postponed, can you please help me in cancelling the flight ticket?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your given name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.