CREATE TABLE table_45323 ("Series #" FLOAT, "Season #" FLOAT, "Title" TEXT, "Directed by" TEXT, "Written by" TEXT, "Original air date" TEXT)

Which Directed by has an Original air date of april 29, 2000?
SELECT "Directed by" FROM table_45323 WHERE "Original air date" = 'april 29, 2000'
SELECT "Directed by" FROM "table_45323" WHERE "Original air date" = 'april 29, 2000'