PHOENIX, June 25 -- Tripware a travel service for business travelers, now enables travelers to book Southwest flights directly in Microsoft Outlook through Tripware's OutBook travel software. Southwest Airlines is the #1 U.S. airline carrier*. With the addition of Southwest, Tripware offers business travelers eight out of the top 10 U.S. airlines, including American, Delta, United, and US Airways. Tripware is the only travel service that fully integrates planning and booking of business trips directly in Mi......