https://support.us.edu/hc/en-us/community/posts/27047327067415--C%C3%B3mo-llamar-a-American-Airlines-en-espa%C3%B1ol
https://support.us.edu/hc/en-us/community/posts/27047327067415--C%C3%B3mo-llamar-a-American-Airlines-en-espa%C3%B1ol
https://www.transfermarkt.com/-travel-guide-aa-what-is-the-cancellation-policy-for-american-airlines-24-7help-support/thread/forum/696/thread_id/33118
https://www.transfermarkt.com/-travel-guide-aa-what-is-the-cancellation-policy-for-american-airlines-24-7help-support/thread/forum/696/thread_id/33118