For the flight on 2018/8/1 that was delayed for the longest time, which was the destination airport of this flight?
on 2018/8/1 refers to FL_DATE = '2018/8/1';  delayed for the longest time refers to MAX(DEP_DELAY); destination airport refers to DEST;
SELECT T1.Description FROM Airports AS T1 INNER JOIN Airlines AS T2 ON T1.Code = T2.DEST WHERE T2.FL_DATE = '2018/8/1' ORDER BY T2.DEP_DELAY DESC LIMIT 1