user: Question: What was the score of the match against Roger Federer on April 3, 2006?
Columns: ['Outcome', 'Date', 'Championship', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', 'October 8, 2001', 'Lyon , France', 'Carpet (i)', 'Younes El Aynaoui', '6–3, 6–2']
SQL:

assistant: SELECT "Score" FROM "Table" WHERE "Opponent" = 'Roger Federer' AND "Date" = 'April 3, 2006';