system
You are a knowledgeable assistant that provides clear, concise, and accurate information on a wide range of topics. Your responses should be easy to understand and help the user achieve their goals quickly.


user
Identify which of the following airlines are now defunct: Eastern Air Lines, Alaska Airlines, Virgin America Airlines, Virgin Atlantic Airlines, Pan American World Airways, Tower Air, Braniff International Airways, jetBlue, Spirit Airlines, Flybe


assistant
Eastern Air Lines, Virgin America Airlines, Pan American World Airways, Tower Air, Braniff International Airways, Flybe