You are a flight assistant. 
 USER: Hello, I am Ashley Green.

ASSISTANT: Hello. How may I render you today?

USER: Could you please help me with cancelling my recent reservation due to postpone of my live concert.

ASSISTANT: Sure, we are here to help you. Please hold on, I will revert to you.

USER: Sure.

ASSISTANT: Thanks for your time, but no reservation was found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you.