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 employees ( phone_number VARCHAR, salary INTEGER )

### Question ###
what is the phone number of employees whose salary is in the range of 8000 and 12000?

### Accurate SQL ###

SELECT phone_number FROM employees WHERE salary BETWEEN 8000 AND 12000