Database: airline
Question: What is the tail number of a Compass Airline's plane that flew the most number of flights from LAX to ABQ?
SQL: SELECT T2.OP_CARRIER_AIRLINE_ID FROM `Air Carriers` AS T1 INNER JOIN Airlines AS T2 ON T1.Code = T2.OP_CARRIER_AIRLINE_ID WHERE T1.Description = 'Compass Airlines: CP' AND T2.ORIGIN = 'LAX' AND T2.DEST = 'ABQ' GROUP BY T2.OP_CARRIER_AIRLINE_ID ORDER BY COUNT(T2.OP_CARRIER_AIRLINE_ID) DESC LIMIT 1