[{"role": "user", "content": "I'm trying to express my gratitude to an Italian friend, but I want to make sure I get it right - how do I say 'You saved my life' in Italian?"}, {"role": "assistant", "content": "That's a beautiful sentiment! The correct translation of 'You saved my life' in Italian is 'Mi ha salvato la vita.'"}, {"role": "user", "content": "That's perfect, grazie mille! I want to make sure I use the correct grammar and pronunciation. Is 'Mi ha salvato la vita' a formal or informal way of expressing gratitude?"}, {"role": "assistant", "content": "'Mi ha salvato la vita' is a formal way of expressing gratitude, but it's commonly used in both formal and informal settings when you want to convey deep appreciation. If you want to use a more informal tone with a close friend, you could still use 'Mi ha salvato la vita' without worrying about being too formal."}, {"role": "user", "content": "I see, so it's safe to use 'Mi ha salvato la vita' in most situations. What if I want to respond to someone who says 'Mi ha salvato la vita' to me? How do I say 'you're welcome' in Italian?"}, {"role": "assistant", "content": "If someone says 'Mi ha salvato la vita' to you, you can respond with 'Di niente' or 'Prego', which both mean 'you're welcome'. 'Di niente' is a bit more informal, while 'Prego' is more formal, but both are suitable responses in most situations."}]