Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_28859177_3 (production_code VARCHAR, original_air_date VARCHAR)
### Question:
What is the production code for the episode that aired on October 15, 2004?
### Answer:
SELECT production_code FROM table_28859177_3 WHERE original_air_date = "October 15, 2004"