[{"role": "user", "content": "I'm trying to learn some common idiomatic expressions in Italian and I'm stuck on the sentence 'He owes me one'. Can you help me translate it?"}, {"role": "assistant", "content": "The correct translation of the idiomatic expression 'He owes me one' is 'Me ne deve una.' This expression is used to convey that someone is indebted to you for a favor or help you've provided in the past."}]