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 table_name_61 (duration VARCHAR, end_time VARCHAR)
### Question:
What is the duration of the flight with end time of 21:06?
### Answer:
SELECT duration FROM table_name_61 WHERE end_time = "21:06"