Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE AIRLINES (uid VARCHAR, Airline VARCHAR); CREATE TABLE FLIGHTS (FlightNo VARCHAR, Airline VARCHAR)
### Question:
What are flight numbers of Airline "United Airlines"?
### Answer:
SELECT T1.FlightNo FROM FLIGHTS AS T1 JOIN AIRLINES AS T2 ON T2.uid = T1.Airline WHERE T2.Airline = "United Airlines"