Hi.
user
Hello. How may I help you?
assistant
Actually, I want to change my existing reservation can you please help me in this intent?
user
Sure, please wait for a moment to check your details. Meanwhile, may I know your name?
assistant
Sure, my name is Janet Campbell.
user
Sorry, there is no reservation found on your name.
assistant
Ok, no problem. Thank you for your service.
user
Thank you for choosing us, have a good day.
assistant