Task: Text to Code
Input (English): SQL: SELECT T1.Customer_ID FROM Customers AS T1 EXCEPT SELECT T2.Customer_ID FROM Policies AS T2
Feedback: should show customer details instead of customer id as they question is asking about the names
Output (English): SELECT customer_details FROM customers EXCEPT SELECT t2.customer_details FROM policies AS t1 JOIN customers AS t2 ON t1.customer_id  =  t2.customer_id