user: Question: What is the average last cf of the St. Louis Blues, who has less than 4 cf appearances and less than 1 cf wins?
Columns: ['Team', 'CF appearances', 'CF wins', 'Cup wins', 'Last CF']
Types: ['text', 'real', 'real', 'real', 'real']
Sample row: ['Detroit Red Wings', 10.0, 6.0, 4.0, 2009.0]
SQL:

assistant: SELECT AVG("Last CF") FROM "Table" WHERE "CF appearances" < 4.0 AND "CF wins" < 1.0 AND "Team" = 'St. Louis Blues';