text: 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 FLIGHTS (Airline VARCHAR, SourceAirport VARCHAR); CREATE TABLE AIRLINES (uid VARCHAR, Airline VARCHAR)
  ### Question:
  How many 'United Airlines' flights depart from Airport 'AHD'?
  ### Answer:
  SELECT COUNT(*) FROM AIRLINES AS T1 JOIN FLIGHTS AS T2 ON T2.Airline = T1.uid WHERE T1.Airline = "United Airlines" AND T2.SourceAirport = "AHD"