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