Sabre’s newest system, SabreSonic CSS, performs a broad array of services for any airline. It sells seats, collects payments, allows customers to shop for flights on the airline’s Web site, and provides and interface for communication with reservation agents. Customers can use it to access airport kiosks, select specific seats, check their bags, board, rebook, and receive refunds for flight cancellations. All of the data generated by these transactions are stored centrally within the system. JetBlue selected SabreSonic CSS over its legacy system developed by Sabre rival Navitaire, and WestJet was upgrading from an older Sabre reservation system of its own.