query: SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRLINES AS T2 ON T2.uid  =  T1.Airline WHERE T2.Airline  =  "United Airlines"
question: Which flight numbers correspond to United Airlines flights?
query_toks: SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRLINES AS T2 ON T2.uid = T1.Airline WHERE T2.Airline = `` United Airlines ''
query_toks_no_value: select t1 . flightno from flights as t1 join airlines as t2 on t2 . uid = t1 . airline where t2 . airline = value
question_toks: Which flight numbers correspond to United Airlines flights?