Hi.
user
Hello. How can I assist you?
assistant
 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?
user
Sure, can I know your name please?
assistant
Sure, Paul Brown.
user
Ok, wait a moment please.
assistant
Ok.
user
Sorry, there is no reservation found on your name.
assistant
No issue, Thank you for the information.
user
Thank you for approaching us.
assistant