The conversation between human and AI assistant.
[|Human|] Edit the following paragraph to refine its flow.
[|AI|] Flying on an airplane, particularly during a long-haul flight, can be quite a stressful experience. Cramped seating, lack of mobility, and the stagnant air often exacerbate the discomfort, making an already lengthy journey feel even more arduous.
[|Human|] 
Edit the following paragraph to refine its flow.