CREATE TABLE table_61841 ("Air Date" TEXT, "Rating" TEXT, "18-49" TEXT, "Viewers" TEXT, "Weekly Winner" TEXT)

What is Air Date, when Rating is 'N/A', and when Weekly Winner is 'Wedding DJ Chris Dixon'?
SELECT "Air Date" FROM table_61841 WHERE "Rating" = 'n/a' AND "Weekly Winner" = 'wedding dj chris dixon'
SELECT "Air Date" FROM "table_61841" WHERE "Rating" = 'n/a' AND "Weekly Winner" = 'wedding dj chris dixon'