[{"role": "user", "content": "I'm trying to learn some common phrases in Italian, including idiomatic expressions, and I'm stuck on 'I'm not kidding.' Can you help me translate it?"}, {"role": "assistant", "content": "The Italian translation for 'I'm not kidding' is 'Non sto scherzando.' or more informally 'Io non sto scherzando.' or simply 'Non sto scherzando.' It's an idiomatic expression that is used to convey that you're being serious, so it's a very useful phrase to know!"}]