On what dates were episodes written by Robert Carlock aired?
CREATE TABLE table_14889988_1 (
    original_air_date VARCHAR,
    written_by VARCHAR
)
SELECT original_air_date FROM table_14889988_1 WHERE written_by = "Robert Carlock"
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: On what dates were episodes written by Robert Carlock aired? ### Input: CREATE TABLE table_14889988_1 (
    original_air_date VARCHAR,
    written_by VARCHAR
) ### Response: SELECT original_air_date FROM table_14889988_1 WHERE written_by = "Robert Carlock"