What is the original air date of season 18?
CREATE TABLE table_11664625_2 (original_air_date VARCHAR, no_in_season VARCHAR)
SELECT original_air_date FROM table_11664625_2 WHERE no_in_season = 18
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_11664625_2 (original_air_date VARCHAR, no_in_season VARCHAR) Question: What is the original air date of season 18? [/INST] SELECT original_air_date FROM table_11664625_2 WHERE no_in_season = 18 </s>