Hello,. I am Karen Roberts.
user
Hello, how can I help you?
assistant
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 a minute.
assistant
Ok.
user
Sorry, to say you that there is no reservation with your name.
assistant
Ok, no issue. Thank you.
user
Thank you for reaching us.
assistant