Hello, I am Gary Edwards.
user
Hello, how may I help you?
assistant
As my manager did not approve my leave, I would like to change my existing reservation.
user
Sure, I will check the possibilities. Please be online for a moment.
assistant
Ok, take your time.
user
Sorry Gary, there are no flights reserved on your name.
assistant
That's ok, thank you.
user
Thank you for choosing us, have a good day.
assistant
Welcome.
user