[{"role": "user", "content": "I'm writing a letter to my Italian friend and I want to express my regret for not being able to prevent something from happening, can you please help me translate the sentence 'I tried to warn you' into Italian?"}, {"role": "assistant", "content": "The translation of 'I tried to warn you' in Italian is 'Ho provato ad avvisarvi.'. This sentence should help you convey your regret for not being able to prevent something from happening to your friend."}]