Horrible technology to work with - Front Desk Agent Marriott International Employee Review

The training is awful (expect to learn EVERYTHING from hours of computer training). The software they use for reservations only uses keystrokes and is rumored to be from the 70s. It is a black screen with green characters (nothing more updated than that), and getting things to go from online to in the system is just impossible. Often the reservation system would overbook itself? Why does this even happen? Now I am having to confront customers walking in to check in and tell them their room is non existent because of our reservation system? Horrible...