Which flight numbers correspond to United Airlines flights?
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  =  "United Airlines"
[{'FlightNo': 28}, {'FlightNo': 29}, {'FlightNo': 44}, {'FlightNo': 45}, {'FlightNo': 54}, {'FlightNo': 55}, {'FlightNo': 90}, {'FlightNo': 91}, {'FlightNo': 108}, {'FlightNo': 109}, {'FlightNo': 142}, {'FlightNo': 143}, {'FlightNo': 148}, {'FlightNo': 149}, {'FlightNo': 198}, {'FlightNo': 199}, {'FlightNo': 226}, {'FlightNo': 227}, {'FlightNo': 276}, {'FlightNo': 277}, {'FlightNo': 308}, {'FlightNo': 309}, {'FlightNo': 326}, {'FlightNo': 327}, {'FlightNo': 370}, {'FlightNo': 371}, {'FlightNo': 414}, {'FlightNo': 415}, {'FlightNo': 424}, {'FlightNo': 425}, {'FlightNo': 470}, {'FlightNo': 471}, {'FlightNo': 520}, {'FlightNo': 521}, {'FlightNo': 556}, {'FlightNo': 557}, {'FlightNo': 560}, {'FlightNo': 561}, {'FlightNo': 604}, {'FlightNo': 605}, {'FlightNo': 608}, {'FlightNo': 609}, {'FlightNo': 626}, {'FlightNo': 627}, {'FlightNo': 658}, {'FlightNo': 659}, {'FlightNo': 708}, {'FlightNo': 709}, {'FlightNo': 744}, {'FlightNo': 745}, {'FlightNo': 754}, {'FlightNo': 755}, {'FlightNo': 786}, {'FlightNo': 787}, {'FlightNo': 810}, {'FlightNo': 811}, {'FlightNo': 828}, {'FlightNo': 829}, {'FlightNo': 878}, {'FlightNo': 879}, {'FlightNo': 888}, {'FlightNo': 889}, {'FlightNo': 900}, {'FlightNo': 901}, {'FlightNo': 924}, {'FlightNo': 925}, {'FlightNo': 946}, {'FlightNo': 947}, {'FlightNo': 996}, {'FlightNo': 997}, {'FlightNo': 1000}, {'FlightNo': 1001}, {'FlightNo': 1026}, {'FlightNo': 1027}, {'FlightNo': 1062}, {'FlightNo': 1063}, {'FlightNo': 1068}, {'FlightNo': 1069}, {'FlightNo': 1100}, {'FlightNo': 1101}, {'FlightNo': 1144}, {'FlightNo': 1145}, {'FlightNo': 1166}, {'FlightNo': 1167}, {'FlightNo': 1168}, {'FlightNo': 1169}, {'FlightNo': 1192}, {'FlightNo': 1193}, {'FlightNo': 1208}, {'FlightNo': 1209}, {'FlightNo': 1216}, {'FlightNo': 1217}, {'FlightNo': 1250}, {'FlightNo': 1251}, {'FlightNo': 1274}, {'FlightNo': 1275}, {'FlightNo': 1284}, {'FlightNo': 1285}, {'FlightNo': 1328}, {'FlightNo': 1329}]