Flex-Able Integration. serves clients across Dallas, Fort Worth, Addison, Farmers Branch, The Colony, Richardson, Plano, Lewisville, Coppell, Grapevine, Euless, Irving, Highland Park, University Park, Flower Mound, Southlake, Colleyville, Frisco, Allen, McKinney, Garland, Prosper, Texas, and the surrounding areas.