Upon booking, your confirmation number is often displayed on the page immediately—sometimes even before an email is issued. Once you've checked in, the code can also be found on your boarding ticket. Contact the airline if you are unable to locate it. Our goal is to give each and every customer a satisfying trip experience. You can contact 18704327330 or book online if you have any inquiries or would like to make specific travel arrangements.
Link : https://www.flyamericans.com/blog/american-airlines-manage-booking