You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to cancel my recent reservation due to sudden postpone of my interview date. Can you help me in doing that?

ASSISTANT: Sure, we are here to help you. Please wait a moment.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Sure, I am Jonathan White.

ASSISTANT: Sorry to inform, no reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thank you.