This document summarizes a federal contract opportunity notice 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. This replaces former Refresh 17. Resultant contracts will be indefinite delivery, indefinite quantity contracts under GSA's Multiple Award Schedule program for a five year base period and three five-year option periods. The purpose is to provide travel services to government agencies through qualified contractors. Products and services covered include travel consultation, travel management center services, lodging management, specialized conference facilities, air charter services, and new related products and services. Current contract holders under Schedule 599 do not need to reapply.