Hello.
user
Hello, how can I assist you today?
assistant
 I made a reservation earlier this week to give a seminar, but my seminar has been postponed. Can you aid me to change?
user
Sure, we are here to help you. To proceed for changing, we need your name.
assistant
Sure, my name is Ashley Lewis.
user
Ok, please wait for a while.
assistant
Sure.
user
Thank you for your time, we did not find any reservation on your name.
assistant
That's Ok, thanks for your help.
user
Thank you for choosing us.
assistant