Hello.
user
Hello, How can I aid you?
assistant
I am Laura Green. I need o change my existing reservation, Can you help me that please?
user
Sure, I am happy 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.
user
Thank you for choosing us.
assistant
Thanks for your information.
user