Hi.
Hello, how can I help 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, may I know your good name?
I am Margaret Wright.
Please wait for a moment.
Sure.
Sorry to say that, no reservation was found with your good name.
Not a big issue, anyhow thank you very much for checking the reservation status.
Thank you for reaching us.