Hello,.
user
Hello, how may I aid you?
assistant
I am David Miller. I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you please change my existing reservation?
user
Sure, please wait for a minute.
assistant
Sure.
user
There is no reservation found with your name.
assistant
Ok, no issue. Thank you for your information.
user
Thank you.
assistant