You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you please help me out to cancel my reservation?

ASSISTANT: Sure,please provide your details for cancel  reservation.

USER: Sure, this is Ryan Roberts.

ASSISTANT: Wait a moment, I will inform you.

USER: OK.

ASSISTANT: Sorry, there is no reservation on your name  Ryan Roberts.

USER: OK, that's fine. Thank you for your information.

ASSISTANT: Your welcome.