[{"role": "user", "content": "I'm trying to write a postcard to my Italian friend and I want to tell them about my new purchase, so can you help me translate the sentence 'I bought a T-shirt' into Italian?"}, {"role": "assistant", "content": "The translation of 'I bought a T-shirt' in Italian is 'Ho comprato una T-shirt.'. You can use this sentence to tell your friend about your new purchase in your postcard."}]