https://supportcommunity.milestonesys.com/s/question/0D5bH00000ZGRQvSAP/1866-%F0%9D%99%B9%F0%9D%9A%8E%F0%9D%9A%9D%F0%9D%99%B1%F0%9D%9A%95%F0%9D%9A%9E%F0%9D%9A%8E-7380729changes-cancellations-and-standby-how-to-cancel-a-jetblue-flight?language=en_US