Write SQL query to solve given problem: List the air carrier's description of the flights with 0 departure delay.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT T1.Description FROM `Air Carriers` AS T1 INNER JOIN Airlines AS T2 ON T1.Code = T2.OP_CARRIER_AIRLINE_ID WHERE T2.DEP_DELAY = 0 GROUP BY T1.Description