On what flight day was U2 played?
CREATE TABLE table_name_2 (flight_day VARCHAR, artist VARCHAR)
SELECT flight_day FROM table_name_2 WHERE artist = "u2"
### Context: CREATE TABLE table_name_2 (flight_day VARCHAR, artist VARCHAR) ### Question: On what flight day was U2 played? ### Answer: SELECT flight_day FROM table_name_2 WHERE artist = "u2"