You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I support you today?

USER: I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am perky to help you. May I know your name please?

USER: Myself Kenneth Brown.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, no reservation was found based on your name in our records.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.