user: Question: When was the successor who got his seat because of "Until August 2, 1813" seated?
Columns: ['District', 'Vacator', 'Reason for change', 'Successor', 'Date successor seated']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['New York 15th', 'Vacant', 'Rep-elect William Dowse died on February 18, 1813', 'John M. Bowers (F)', 'Seated June 21, 1813']
SQL:

assistant: SELECT "Date successor seated" FROM "Table" WHERE "Reason for change" = 'Until August 2, 1813';