Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: 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?

### Accurate SQL ###

SELECT production_code FROM table_28859177_3 WHERE original_air_date = "October 15, 2004"