Hello,.
Hello, how can I assist you?
I would like to change an existing reservation.
OK, I will help you. May I know your good name?
My good name is Samantha Walker.
Please wait, I will check and get back to you.
OK, I will wait.
Thanks for waiting, there is no reservation on your name.
OK, not a problem. Thank you.
Thanks to connecting with us, have a nice day.