American Airlines provide 24 hour cancellation policy (+𝟭-𝟴𝟲𝟲-𝟳𝟯𝟴-𝟬𝟲𝟴𝟵) (ota) if you book a flight at least 7 day before departure and cancel within 24 hour of Booking you will get full refund without any cancellation fee

https://www.nairaland.com/8259410/what-cancelation-policy-american-airlines