A mom from Florida was flying to Philadelphia with her 11-month-old daughter, Lucy, when a stranger’s act of kindness made a huge difference. Kelsey and Lucy fly to Philadelphia every 3 months for treatment for Lucy’s chronic lung disease. They have to travel with an oxygen tank and a lot of other supplies. On their most recent trip, the flight attendant told Kelsey that a passenger in first class would like to switch seats with her. She said having the extra room for Lucy and the large oxygen tank made their flight so much better.