user: Question: What is Date, when Outcome is "Runner Up", and when Opponent is "Lu Jiaxiang"?
Columns: ['Outcome', 'Date', 'Tournament', 'Surface', 'Opponent', 'Score']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['Runner Up', '17 June 2007', 'Jakarta , Indonesia', 'Hard', 'Nungnadda Wannasuk', '3–6, 6–4, 6–3']
SQL:

assistant: SELECT "Date" FROM "Table" WHERE "Outcome" = 'Runner Up' AND "Opponent" = 'Lu Jiaxiang';