user: Question: Name the date when the visitor is Nets
Columns: ['Date', 'Visitor', 'Score', 'Home', 'Leading scorer', 'Attendance', 'Record']
Types: ['text', 'text', 'text', 'text', 'text', 'real', 'text']
Sample row: ['February 1, 2008', 'Magic', '108–106', '76ers', 'Hedo Türkoğlu (23)', 16513.0, '30–18']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Visitor" = 'Nets';