The conversation between human and AI assistant.
[|Human|] Extract the airlines mentioned in the text and separate them with a comma.  Which one operated the shortest flight?
[|AI|] Qatar Airways, Cathay Pacific, Singapore Airlines, LATAM Airlines, Air CaraÃ¯bes.  Singapore Airlines operated the shortest flight.
[|Human|] 
Extract the airlines mentioned in the text and separate them with a comma.  Which one operated the shortest flight?