[{"role": "user", "content": "I'm writing a letter to an Italian friend and I want to express my concerns about someone's reliability, can you help me translate the sentence 'You can't trust him' into Italian?"}, {"role": "assistant", "content": "The translation of 'You can't trust him' in Italian is 'Non puoi fidarti di lui.'. I hope this helps you express your concerns to your friend."}]