Hi.
Hello, how may I aid you today?
 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, we are here to help you.
Thank you.
Can I have your name to proceed further?
I made a reservation by this name Paul Smith.
Ok, please wait.
Sure.
Thank you for your time, sorry no reservation found on your name.
That's ok, not an issue. Thank you for your information.
Thank you for reaching us.