You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Myself Michael Young.

ASSISTANT: Ok.

USER: I need to cancel my recent reservation due to postpone of my seminar, can you please help me?

ASSISTANT: Sure, please wait. I am sorry, there are no reservations with your name.

USER: That's fine.

ASSISTANT: Thank you, have a good day.

USER: Thank you for searching the details.