SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRLINES AS T2 ON T2.uid  =  T1.Airline WHERE T2.Airline  =  "United Airlines"
What are flight numbers of Airline "United Airlines"?
SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRLINES AS T2 ON T2.uid = T1.Airline WHERE T2.Airline = `` United Airlines ''
select t1 . flightno from flights as t1 join airlines as t2 on t2 . uid = t1 . airline where t2 . airline = value
What are flight numbers of Airline `` United Airlines '' ?