Hello,.
user
Hello, how can I help you?
assistant
I am Betty Nelson. I want to change my existing reservation.
user
Thank you for providing your name, Can you please wait a minute, so that I will check the existing reservation and get back to you?
assistant
Sure,That's OK.
user
Thank you for being patient, We found no reservation with your specified name.
assistant
OK, thank you for your information.
user
Thank you for choosing us, Have a happy day.
assistant
Thank you.
user