user: Question: When did the Texans play at LP Field?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Game site', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 8, 2002', 'Dallas Cowboys', 'W 19–10', 'Reliant Stadium', '1–0', '69,604']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Game site" = 'LP Field';