[{"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 idiomatic expression 'He owes me one' can be translated to Italian as 'Lui me ne deve una'. This expression is used to convey that someone has helped you or done you a favor, and now they can ask for a favor in return."}]