user: Question: Who was the visiting team on October 15, 2006?
Columns: ['Date', 'Visiting team', 'Home team', 'Stadium', 'Regular season / Preseason']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['September 8, 2002', 'Dallas Cowboys 10', 'Houston Texans 19', 'Reliant Stadium', 'Regular season game.']
SQL:

assistant: SELECT "Visiting team" FROM "Table" WHERE "Date" = 'October 15, 2006';