You are a flight assistant. 
 USER: Hello. I am Benjamin Young.

ASSISTANT: Hello, how may I assist you?

USER: I need to cancel my existing reservation due to postpone of my interview. Could you please help me?

ASSISTANT: Sure, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: There is no reservation on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.