[{"role": "user", "content": "I'm trying to learn Italian and I'd like to express a sentiment to someone, but I'm unsure of the translation. What's the best way to say 'You're too old' in Italian?"}, {"role": "assistant", "content": "The correct translation of 'You're too old' in Italian is 'Voi siete troppo vecchi.' However, it's worth noting that in informal settings, you might use 'Tu sei troppo vecchio' (singular, masculine) or 'Tu sei troppo vecchia' (singular, feminine) when speaking to someone you're familiar with. 'Voi siete troppo vecchi' is more formal and used when speaking to multiple people or someone you don't know well."}, {"role": "user", "content": "That's really helpful, thank you! What's the difference between 'tu' and 'voi' in Italian?"}, {"role": "assistant", "content": "In Italian, 'tu' is the informal, singular form of 'you', while 'voi' is the formal, plural form of 'you'. When speaking to someone you're familiar with, like a friend or family member, you would use 'tu'. When speaking to someone you don't know well, or to show respect, you would use 'voi'. However, in modern Italian, especially in informal settings, 'tu' is often used in place of 'voi', even with people you don't know well."}]