[{"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 'Io ho provato ad avvisarvi.'. This sentence conveys a sense of regret for not being able to prevent something from happening, which fits perfectly with the tone of your letter."}]