Hello, I am Dennis Roberts.
user
Hello, How may I help you?
assistant
My palan for meeting my family is preponed, so I want to change my existing reservation.
user
Please hold for a while, I will let you the details.
assistant
OK.
user
Sorry there is no reservation found on your name.
assistant
Thanks for the information.
user
Thanking you for connecting us, have a splendid day.
assistant