[{"role": "user", "content": "I'm trying to learn Italian and I want to express my disappointment to a friend, can you help me translate the sentence 'Why didn't you come?' into Italian?"}, {"role": "assistant", "content": "The translation of 'Why didn't you come?' into Italian is 'Perch\u00e9 non sei venuto?'. This sentence is used to express disappointment or surprise that someone did not attend an event or meeting."}]