user: Question: When was Naomi Cavaday the opponent?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner-up', '6 October 2003', 'Bari , Italy', 'Clay', 'Bettina Pirker', '6–2, 7–5']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Opponent" = 'Naomi Cavaday';