[{"role": "user", "content": "I'm writing a letter to my Italian friend about a great dancer I've seen, and I want to describe the experience to them - how would I translate the sentence 'I've seen you dance' into Italian?"}, {"role": "assistant", "content": "The translation of 'I've seen you dance' in Italian is 'L'ho visto danzare.' This sentence is in the formal form, if you want to use the informal form you can use 'Ti ho visto danzare.'"}]