Who is the narrator of the "Flight" episode?
who refers to name; narrator refers to role = 'Narrator'; the "Flight" episode refers to title = 'Flight'
SELECT T3.name FROM Episode AS T1 INNER JOIN Credit AS T2 ON T1.episode_id = T2.episode_id INNER JOIN Person AS T3 ON T3.person_id = T2.person_id WHERE T1.title = 'Flight' AND T2.role = 'Narrator'