[{"role": "user", "content": "I'm trying to express regret to someone in Italian, can you help me translate the sentence 'You should've come' into Italian?"}, {"role": "assistant", "content": "The translation of 'You should've come' in Italian is 'Saresti dovuta venire.' if you're speaking to a female, and 'Saresti dovuto venire' if you're speaking to a male."}]