user: Question: What is the date of the match on Clay with score of 6-3 2-6 6-4?
Columns: ['Date', 'Tournament', 'Surface', 'Opponent in final', 'Score', 'Prize Money']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['May 21, 2006', 'Antalya', 'Hard', 'Çağla Büyükakçay', '6-3 6-2', '$10,000']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Surface" = 'Clay' AND "Score" = '6-3 2-6 6-4';