You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid 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, we are here to help you. May I know your name?

USER: I am Daniel Gonzalez.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for approaching us.