user: Question: How many timeslots were available for the season finale on August 29, 2009?
Columns: ['Season', 'Episodes', 'Timeslot (ET)', 'Season Premiere', 'Season Finale', 'TV Season', 'Rank', 'Viewers (in millions)']
Types: ['real', 'real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 10.0, 'Saturday 8:00 PM', 'February 21, 2004', 'August 14, 2004', '2003-2004', '#123', '6.21']
SQL:

assistant: SELECT COUNT("Timeslot (ET)") FROM "Table" WHERE "Season Finale" = 'August 29, 2009';