[{"role": "user", "content": "I want to understand how to express frustration with someone's behavior in Italian. How do I say 'You're immature' in Italian?"}, {"role": "assistant", "content": "In Italian, you can express 'You're immature' as 'Voi siete immaturi.' This phrase should convey your frustration with someone's immature behavior."}, {"role": "user", "content": "That's really helpful, thank you. Is 'Voi siete immaturi' formal or informal?"}, {"role": "assistant", "content": "'Voi siete immaturi' is a formal way to say 'You're immature.' If you want to use an informal tone, you would say 'Tu sei immaturo' (for a male) or 'Tu sei immatura' (for a female) when speaking to one person, or 'Voi siete immaturi' can also be used in some informal contexts, especially in the north of Italy, but 'voi' is generally more formal."}]