Hello. My name is Christine White.
user
Hello, How can I serve you?
assistant
I want to change my existing reservation due to my appointment got postponed. Can you help me with change reservation?
user
Sure, I am blissful to help you. 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 problem. Thanks for the information.
user
Thank you for choosing us.
assistant