[{"role": "user", "content": "I'm trying to learn Italian and I came across the sentence 'You know who I am.' Can you please help me translate it into Italian so I can better understand how to express myself in different situations?"}, {"role": "assistant", "content": "The translation of 'You know who I am' in Italian is 'Sa chi sono.' This sentence is quite direct and is used to affirm that the person you're speaking to is already aware of your identity."}]