VIRTUAL GDS Standalone educational simulation of Amadeus, Apollo, Galileo, Sabre, Worldspan, or Abacus, enabling students to book, store, modify, and ticket reservations using any computer or work station. All records created by students are kept in storage until the instructor chooses to delete them. Entry formats and responses are identical to those of the simulated reservation system. Used in conjunction with the exercises provided, the simulation environment provides an accurate, interactive learning system for automated reservations and ticketing.