United Airlines is the official airline for the 2004 IEEE - IRPS. If you or a travel agent call United's toll-free number (1-800-521-4041) to book your reservations, you will receive a 5% discount off the lowest applicable discount fare, including First Class or a 10% discount off full fare unrestricted coach fares, purchased 7 days in advance. An additional 5% discount will apply when tickets are purchased at least 30 days in advance of your travel date. Discounts also apply on Shuttle by United and United Express. Call United's Specialized Meeting Reservations Center at 1-800-521-4041 to obtain the best fares and schedule information. Make sure you refer to Meeting ID #523AC. Dedicated reservation agents are on duty 7 days a week from 8:00 a.m. to 10:00 p.m. EST.