[{"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": "You can express frustration with someone's behavior in Italian by saying 'Tu sei immaturo.' This directly translates to 'You're immature.' Keep in mind that the sentence structure can vary depending on the level of formality. Using 'tu' is informal, and it's suitable for conversations with friends or people you're familiar with. If you want to use a more formal tone, you can say 'Lei \u00e8 immaturo.' However, please note that 'immaturo' is a masculine adjective. If you're referring to a female, you would use 'Tu sei immatura' or 'Lei \u00e8 immatura' for formal conversations."}]