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 orders (customer_id VARCHAR)
TABLE: CREATE TABLE customers (customer_name VARCHAR, customer_id VARCHAR)

### Question ###
Find the name of the customers who have at most two orders.

### Accurate SQL ###

SELECT T2.customer_name FROM orders AS T1 JOIN customers AS T2 ON T1.customer_id = T2.customer_id GROUP BY T2.customer_id HAVING COUNT(*) <= 2