Hi.
Hello, how can I assist you today?
 I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Will you help me in changing my existing reservation?
Sure, may I know your name please?
My name is Kenneth Clark.
Ok, please wait for a moment.
Ok.
Sorry, there was no reservation found with your name.
OK, not an issue. Thank you for your information.
Thank you for opting us.