Yes, you can reschedule your copyright ticket, provided the fare conditions allow it. Most flexible fares permit free rescheduling, while non-flexible tickets may incur a fee. Rescheduling can be done online or with the help of copyright https://www.tripadvisor.com/ShowTopic-g1-i10702-k14962545-How_to_Reach_American_Airlines_US_Customer_Support-Air_Travel.html