<|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|>What are the booking start and end dates of the apartments with type code "Duplex"?

SQL Table Create Statement:
CREATE TABLE Apartments (apt_id VARCHAR, apt_type_code VARCHAR); CREATE TABLE Apartment_Bookings (booking_start_date VARCHAR, apt_id VARCHAR)<|end|><|assistant|><codestart type="sql">SELECT T1.booking_start_date, T1.booking_start_date FROM Apartment_Bookings AS T1 JOIN Apartments AS T2 ON T1.apt_id = T2.apt_id WHERE T2.apt_type_code = "Duplex"</codeend><|end|>