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 Customers (first_name VARCHAR, last_name VARCHAR, amount_outstanding INTEGER)

### Question ###
List the first name and last name of customers have the amount of outstanding between 1000 and 3000.

### Accurate SQL ###

SELECT first_name, last_name FROM Customers WHERE amount_outstanding BETWEEN 1000 AND 3000