https://central.xero.com/s/question/0D58V00009LtdoiSAB/what-is-the-penalty-for-cancelling-a-flight-on-american-%F0%9D%94%B8%F0%9D%95%9A%F0%9D%95%A3%F0%9D%95%9D%F0%9D%95%9A%F0%9D%95%9F%F0%9D%95%96%F0%9D%95%A4fast