American airlines cancellation policy provides several ways of canceling a booking. For instance, you may choose to visit the official AA web site to cancel their booking. log into your account, and navigate to the “My Trips” section. From there, you can cancel the reservation and receive a full refund using your original payment method. Another option is to contact customer care to request for assistance
Source: https://support.google.com/admanager/thread/306371830?hl=en&sjid=1288556949322578338-AP
