Hi.
Hello, how can I help 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, may I know your name please?
I am Stephanie Jackson.
Ok, please wait for a moment.
Sure.
Sorry, there was no reservation found with your given name.
Ok, not an issue. Thank you for checking.
Thank you for choosing us.