Hello. I am Emma Hall.
user
Hello, How can I provide assistance to you today?
assistant
I want to change my existing reservation due to postpone of my client meeting.
user
Sure, I will help you with that. 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
No problem, thank you for your help.
user
Thank you for choosing us.
assistant