Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_4488 ( "Region" text, "Operator" text, "Licence award date" text, "On air date" text, "Closure date" text )

### Question ###
When was the ensemble closed that went on air in June 2003?

### Accurate SQL ###

SELECT "Closure date" FROM table_4488 WHERE "On air date" = 'june 2003'