Hello. I am Janet White.
Hello, how can I assist you Mr. Janet White?
I already had a reservation for my holiday trip but, suddenly I need to attend a client meeting at head quarters. So I need to change my reservation.
Please wait a moment, I will check.
Sure.
Thank you for waiting. Sorry, there is no reservation been found on your name to change.
No problem, thank you for the information.
Thank you for choosing our agency.