Hi, I am Sarah Wright.
user
Hello, How can I help you?
assistant
Owing to an emergency I need to change an existing reservation, can you help me with this?
user
Sure, I will help you in changing. Please wait for a while.
assistant
Ok.
user
Thanks 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.
user
Thank you for your presence.
assistant
Thanks for your information.
user