Who directed the episode that aired November 21, 2003?
CREATE TABLE table_30812 (
    "Series #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
)
SELECT "Directed by" FROM table_30812 WHERE "Original air date" = 'November 21, 2003'
Below are sql tables schemas paired with instruction that describes a task. Using valid SQLite, write a response that appropriately completes the request for the provided tables. ### Instruction: Who directed the episode that aired November 21, 2003? ### Input: CREATE TABLE table_30812 (
    "Series #" real,
    "Title" text,
    "Directed by" text,
    "Written by" text,
    "Original air date" text,
    "Production code" real
) ### Response: SELECT "Directed by" FROM table_30812 WHERE "Original air date" = 'November 21, 2003'