Hello.
Hello. How can I aid you?
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?
Sure, I can help you. May I know your name?
Myself Katherine Baker.
Give me a minute.
Ok.
 Sorry, we couldn't find a reservation on your name to change.
It's ok, thank you.
Thank you for choosing us.