<|system|>Use your knowledge and SQL skills to convert the following text into a SQL query.
Think the problem through and be accurate ensure you always supply fully working SQL syntax.

SQL Statments should be wrapped in <codestart type="sql"> and </codeend> tags.

Example output:
<codestart type="sql">SELECT * FROM table_name;</codeend>
<codestart type="sql">SELECT column_name FROM table_name WHERE column_name = 'value';</codeend><|end|><|user|>How many United Airlines flights go to City 'Aberdeen'?

SQL Table Create Statement:
CREATE TABLE AIRPORTS (AirportCode VARCHAR, City VARCHAR); CREATE TABLE AIRLINES (uid VARCHAR, Airline VARCHAR); CREATE TABLE FLIGHTS (DestAirport VARCHAR, Airline VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT COUNT(*) FROM FLIGHTS AS T1 JOIN AIRPORTS AS T2 ON T1.DestAirport = T2.AirportCode JOIN AIRLINES AS T3 ON T3.uid = T1.Airline WHERE T2.City = "Aberdeen" AND T3.Airline = "United Airlines"</codeend><|end|>