query: SELECT customer_first_name ,  customer_last_name FROM Customers EXCEPT SELECT T1.customer_first_name ,  T1.customer_last_name FROM Customers AS T1 JOIN Accounts AS T2 ON T1.customer_id  =  T2.customer_id
question: What the full name customer who do not have any account?
query_toks: SELECT customer_first_name , customer_last_name FROM Customers EXCEPT SELECT T1.customer_first_name , T1.customer_last_name FROM Customers AS T1 JOIN Accounts AS T2 ON T1.customer_id = T2.customer_id
query_toks_no_value: select customer_first_name , customer_last_name from customers except select t1 . customer_first_name , t1 . customer_last_name from customers as t1 join accounts as t2 on t1 . customer_id = t2 . customer_id
question_toks: What the full name customer who do not have any account?