Hello.
user
Hello. How can I help you?
assistant
I want to change my reservation as my plan to visit Chicago is postponed. Can you change my reservation?
user
Sure, I will help you to change your reservation.
assistant
Thank you.
user
Ok, may I know your name?
assistant
My name is Nancy Smith.
user
Sorry, no reservation found on your name to change your reservation.
assistant
Ok, thank you for the information.
user
Welcome, have a nice day.
assistant