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