On which dates did the episodes directed by TR Babu Subramaniam air?
CREATE TABLE table_17355820_1 (original_air_date VARCHAR, directed_by VARCHAR)
SELECT original_air_date FROM table_17355820_1 WHERE directed_by = "TR Babu Subramaniam"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_17355820_1 (original_air_date VARCHAR, directed_by VARCHAR) Question: On which dates did the episodes directed by TR Babu Subramaniam air? [/INST] SELECT original_air_date FROM table_17355820_1 WHERE directed_by = "TR Babu Subramaniam" </s>