Chaos reigned at the nation’s airports over the holidays. Lost luggage piled up unclaimed. Police were called to help calm passengers who were demanding answers. The grandkids didn’t make it in time for Christmas dinner. Brutal winter weather, old technology and Southwest Airlines’ idiosyncratic way of doing business fueled a meltdown that left 60% of the carrier’s flights nationwide canceled during a peak travel period filled with less experienced fliers. The travails are an alarming reminder of the need to strengthen the rights of passengers and hold airlines accountable. Otherwise, this wil…