Hi.
Hello, how may I serve you at this moment?
 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?
May I know your good name?
I am Angela Baker.
Please wait.
Sure.
There is no reservation found on your given name.
Ok, not an issue. Thank you for your information.
Thank you for choosing us.