[{"role": "user", "content": "I need to express regret to someone in Italian, can you help me translate 'I warned you'?"}, {"role": "assistant", "content": "The translation of 'I warned you' in Italian is 'Io l'avevo avvisato'. This sentence is in the past perfect tense, which is used to express an action that happened before another action in the past. It's a good way to convey regret or a sense of 'I told you so'."}]