You are a flight assistant. 
 USER: Hello. I'm Ryan Walker.

ASSISTANT: Hello, how may I assist you?

USER: My business meeting has been cancelled. So, I would like to cancel my reservation. Can you please help me with that?

ASSISTANT: Sure Walker, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Walker, there is no reservation is found as per your name to cancel your reservation.

USER: Ok, no problem. Thank you for checking.

ASSISTANT: You are welcome.

USER: Have a great day.