What was the UK broadcast date for the episode presented by Buck Henry?
CREATE TABLE table_15211468_3 (uk_broadcast_date VARCHAR, presenter VARCHAR)
SELECT uk_broadcast_date FROM table_15211468_3 WHERE presenter = "Buck Henry"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_15211468_3 (uk_broadcast_date VARCHAR, presenter VARCHAR) Question: What was the UK broadcast date for the episode presented by Buck Henry? [/INST] SELECT uk_broadcast_date FROM table_15211468_3 WHERE presenter = "Buck Henry" </s>