<prompt> Translate the following text to EnglishMfano wa mafanikio ya Southwest ni kuruka ndege kwa dakika 20 badala ya 45, viwanja vya ndege vya Providence na Baltimore, sio Boston na DC, na ushangilifu wa wafanyakazi wake ambao wanampenda rais Herb Kelley.  <response>: A story explains the success of Southwest quick flight turnarounds they ready a plane in 20 minutes instead of the standard 45, less hectic airports Providence and Baltimore, not Boston and D.C., and the enthusiasm of its employees they adore fun-loving president Herb Kelleher. 