find the customer name of the order that have status "delivered"
SELECT t1.customer_name ,  t2.order_date FROM customers AS t1 JOIN customer_orders AS t2 ON t1.customer_id   =   t2.customer_id WHERE order_status   =   "Delivered"
customer name of the order with status \"delivered\" refers to selecting customer_name from a join between customers and customer_orders tables where the order_status is 'Delivered';