Hi,.
user
Hello, how may I serve you today?
assistant
Please change my existing reservation.
user
Sure, may I know your good name please?
assistant
My name is Samuel Wright.
user
Please wait a moment, I will check and get back to you.
assistant
Ok.
user
Thanks for waiting, unfortunately there is no reservation on your name.
assistant
Thanks.
user
Thanks for choosing us, have a nice day.
assistant