Hello,. I am Anna Jackson.
user
Hello, How can I support you today?
assistant
I made a reservation earlier this week to give a seminar, but my seminar has been postponed.
user
Ok.
assistant
Can you please  change my existing reservation?
user
Sure, I will help you with that.
assistant
Thank you.
user
Please wait a while.
assistant
Sure.
user
Thank you for waiting. I have checked in reservation list to change your ticket, but could not find any reservation with your name.
assistant
Ok, no issue. Thank you.
user
Thank you for approaching us.
assistant