user: Question: Who had the high assists when the game was at American Airlines Center 20,223?
Columns: ['Game', 'Date', 'Team', 'Score', 'High points', 'High rebounds', 'High assists', 'Location Attendance', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [47.0, 'February 2', '@ Orlando', 'W 105–95 (OT)', 'Dirk Nowitzki (29)', 'Erick Dampier (7)', 'Jason Kidd (8)', 'Amway Arena 16,551', '28–19']
SQL:

assistant: SELECT "High assists" FROM "Table" WHERE "Location Attendance" = 'American Airlines Center 20,223';