This document provides details on a federal contract opportunity issued by the General Services Administration. The GSA is issuing Solicitation Number QMAD-CY-090001-B, Refresh #18 for Multiple Award Schedule 599 Travel Services Solutions, effective April 26, 2017 to replace Refresh 17. The purpose is to provide all government agencies an efficient means to obtain quality travel services from qualified contractors. Resultant contracts will be IDIQ contracts under GSA's Multiple Award Schedule program with a base period of five years and three five-year option periods. Covered products and services include travel consultation, travel management center services, lodging management, specialized conference facilities, air charter owner/broker services, and new related products/services. Current Schedule 599 contract holders for travel services do not need to reapply.