This document announces a federal contract opportunity issued by the General Services Administration (GSA) Federal Acquisition Service. The GSA is issuing Solicitation Number QMAD-CY-090001-B, Refresh #18 for Multiple Award Schedule 599 Travel Services Solutions, effective April 26, 2017. This replaces former Solicitation Number QMAD-CY-090001-B Refresh 17. Resultant contracts will be indefinite delivery, indefinite quantity contracts under GSA's Multiple Award Schedule program with no need for current contract holders to reapply. The purpose is to provide government agencies an efficient means to obtain quality travel services from qualified contractors. Products and services covered include travel consultation, travel management center services, lodging services and management, specialized conference facilities, air charter services, and new related products and services. Contracts will have a five-year base period and three five-year option periods.