Only on the "CBS This Morning" podcast, hear United Airlines CEO Oscar Munoz's full conversation with CBS News transportation correspondent Kris Van Cleave. They discuss how he plans to change the narrative about United and put the fun back into flying. Munoz shares how the airline is using artificial intelligence and will soon be unveiling bigger overhead bins for luggage. He also discusses tips for flying this holiday season and how the grounding of the 737-Max this March after two deadly crashes will effect holiday travel.