Hello.
Hello, may I know your good name?
My name is Charles Jackson.
Ok Charles, how may I help you?
My meeting got preponed, so I would like to change an existing reservation.
Sure, I can help you in changing. Please wait a moment to check it. Sorry Charles, we cannot found any reservation based on your name.
Its fine. Thank you for your assistance.
Thank you for approaching us Charles, have a nice day.