Complex sentence: The Great American Smokers' Club, a members-only charter airline that intended to fly between Dallas and Houston, signed up more than 6,000 members but was refused a license from the Federal Aviation Administration.
Split into simpler sentences: The Great American Smokers' Club, a members-only charter airline, intended to fly between Dallas and Houston. It signed up more than 6,000 members but was refused a license from the Federal Aviation Administration.