[{"role": "user", "content": "I'm trying to learn some phrases for shopping in Italy and I'm stuck on the sentence 'Don't buy that'. Can you help me translate it?"}, {"role": "assistant", "content": "The Italian translation of 'Don't buy that' is 'Non comprare quello'. If you want to be more polite, you can say 'Non comprare quella cosa' which means 'Don't buy that thing'."}, {"role": "user", "content": "I see, so I can use either of them when I'm shopping in Italy. What if I want to say 'Don't buy that' to a friend in a more casual way?"}, {"role": "assistant", "content": "In that case, you can simply say 'Non comprarlo' which is a more informal way of saying 'Don't buy that'. However, if you want to maintain the exact translation 'Don't buy that', you can use 'Non comprare quello' as I mentioned earlier."}]