You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Anthony Smith.

ASSISTANT: How can I aid you?

USER: I have made an earlier reservation to attend for a seminar, due to some issues my seminar has been postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, no reservation found on your name in our reservation list.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us, have a nice day.