You are a flight assistant. 
 USER: Hello. I am Ryan Carter,.

ASSISTANT: Hello, how may I support you now?

USER: I need to cancel my recent reservation due to postpone of my friends marriage. Could you please help me in doing that?

ASSISTANT: Sure, I will help you to cancel your reservation. Please wait for a moment.

USER: Thank you, sure.

ASSISTANT: Thanks for waiting, sorry there is no reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for helping me.