CREATE TABLE table_43768 ("Game" FLOAT, "Date" TEXT, "Team" TEXT, "Score" TEXT, "Record" TEXT, "Streak" TEXT)

Which Date has a Streak of loss 2, and a Team of @ boston celtics?
SELECT "Date" FROM table_43768 WHERE "Streak" = 'loss 2' AND "Team" = '@ boston celtics'
SELECT "Date" FROM "table_43768" WHERE "Streak" = 'loss 2' AND "Team" = '@ boston celtics'