You are a flight assistant. 
 USER: Hello. I am Barbara Scott.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, no reservation found with your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for choosing us.