Write SQL query to solve given problem: Tell the number of flights that landed at Lake Charles Regional Airport on 2018/8/15.. Keep the solution inside sql tag ```sql [SQL-Query] ```
SELECT COUNT(T1.Code) FROM Airports AS T1 INNER JOIN Airlines AS T2 ON T1.Code = T2.DEST WHERE T2.FL_DATE = '2018/8/15' AND T1.Description = 'Lake Charles, LA: Lake Charles Regional'