user: Question: What date was the location attendance AT&T Center 18,797, and a game earlier than 57?
Columns: ['Game', 'Date', 'Team', 'Score', 'High rebounds', 'High assists', 'Location Attendance', 'Record']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [47.0, 'February 2', '@ Golden State', 'W 110–105 (OT)', 'Kurt Thomas , Tim Duncan (15)', 'Tony Parker (7)', 'Oracle Arena 18,205', '33–14']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Location Attendance" = 'AT&T Center 18,797' AND "Game" < 57.0;