[{"role": "user", "content": "I'm planning a trip to Italy and I need to know how to say \"What did you do?\" in Italian. Can you help me with that?"}, {"role": "assistant", "content": "Yes, of course! The translation for \"What did you do?\" in Italian is \"Cos'hai fatto?\". You can use this phrase to ask someone about their actions or activities."}, {"role": "user", "content": "That's great, thank you! Is there a difference between informal and formal ways of asking this question in Italian?"}, {"role": "assistant", "content": "Yes, in Italian, there is a difference between informal and formal ways of asking this question. \"Cos'hai fatto?\" is the informal way to ask, which is suitable for friends, family, or people you're familiar with. If you want to ask someone formally, you would say \"Cos'ha fatto?\" (using the formal \"Lei\" form)."}, {"role": "user", "content": "That's really helpful to know. Is Cos'ha fatto also used in formal writing?"}, {"role": "assistant", "content": "Yes, \"Cos'ha fatto?\" is also suitable for formal writing, such as in emails, letters, or official documents. However, in formal writing, you might also use more polite language and expressions, depending on the context and tone you want to convey."}]