user: Question: What is the Date, when Partnering is "Francesca Lubiani", and when Opponent in Final is "Yuliya Beygelzimer / Jennifer Hopkins"?
Columns: ['Outcome', 'Date', 'Location', 'Surface', 'Partnering', 'Opponent in final', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Winner', '6 February 1999', 'Wellington, New Zealand', 'Hard', 'Rewa Hudson', 'Gail Biggs / Shelley Bryce', '6–1 6–1']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Partnering" = 'Francesca Lubiani' AND "Opponent in final" = 'Yuliya Beygelzimer / Jennifer Hopkins';