when did the usl a-league have conference finals?
CREATE TABLE table_name_56 (year VARCHAR, league VARCHAR, playoffs VARCHAR)
SELECT year FROM table_name_56 WHERE league = "usl a-league" AND playoffs = "conference finals"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_name_56 (year VARCHAR, league VARCHAR, playoffs VARCHAR) Question: when did the usl a-league have conference finals? [/INST] SELECT year FROM table_name_56 WHERE league = "usl a-league" AND playoffs = "conference finals" </s>