[{"role": "user", "content": "I'm writing a horror story and I'd like to include a line where a character says they saw a ghost in Italian. Can you help me translate 'I saw a ghost' into Italian?."}, {"role": "assistant", "content": "The translation of 'I saw a ghost' in Italian is 'Io vidi un fantasma.'  However a more common way to say this would be 'Io ho visto un fantasma.' or even more casual 'Ho visto un fantasma.'. All of these are correct but the last one is more likely to be used in everyday conversation."}]