What is the original United States air date of the episode written by Mike Ferris? 
CREATE TABLE table_29087004_2 (united_states_original_airdate VARCHAR, written_by VARCHAR)
SELECT united_states_original_airdate FROM table_29087004_2 WHERE written_by = "Mike Ferris"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_29087004_2 (united_states_original_airdate VARCHAR, written_by VARCHAR) Question: What is the original United States air date of the episode written by Mike Ferris?  [/INST] SELECT united_states_original_airdate FROM table_29087004_2 WHERE written_by = "Mike Ferris" </s>