To speak to American Airlines customer service, call 1-800-433-7300. Once connected, follow the automated prompts and press "0" several times or say "representative" to reach a human agent. Alternatively, you can use the live chat feature on the American Airlines website or mobile app for real-time assistance. If you're on Twitter, you can reach out to @AmericanAir for support, as they often respond quickly. Another option is visiting an airport ticket counter for face-to-face assistance. Always have your booking reference, personal information, and details of your inquiry ready to expedite the process.