Hi.
user
Hello, how may I help 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, may I know your name?
assistant
Mark King here.
user
Wait a minute.
assistant
Ok.
user
Sorry, there was no reservation found on your name.
assistant
No issue, Thank you for the information.
user
Thank you for reaching us.
assistant