To book a special rate with Delta Airlines: Reservations and ticketing is available via Delta Meetings or by calling our Delta Meeting Network Reservations at 800-328-1111. When booking online at www.delta.com/meetings, select 'Book Your Flight' and enter your Meeting Code of NMSK9 in the box provided. Or you can Click Here to fill out the form attached and National Travel Systems will be happy to assist in booking a flight for you at a discounted rate along with car rentals. If you have any questions please contact National Travel Systems. Click Here to view contact information for National Travel Systems.