user: Question: On what day did Dirk Nowitzki (14) have a high rebound? 
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: [32.0, 'January 2', 'Philadelphia', 'W 96–86 (OT)', 'Dirk Nowitzki (31)', 'Erick Dampier (14)', 'Jason Kidd (9)', 'American Airlines Center 20,327', '20–12']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "High rebounds" = 'Dirk Nowitzki (14)';