[{"role": "user", "content": "I'm trying to learn Italian and I came across the phrase 'It isn't yours.' Can you help me translate it?"}, {"role": "assistant", "content": "Certo! The translation of 'It isn't yours' in Italian is 'Non \u00e8 vostro' in formal or 'Non \u00e8 tuo' in informal. However, 'Non \u00e8 vostro' can also be used as 'Non \u00e8 vostro' (plural you formal) or 'Non \u00e8 tuo' (you, singular and informal) of the translation progress."}, {"role": "user", "content": "So 'Non \u00e8 tuo' is informal. What if I want to say 'It isn't yours' to someone in a more formal or polite way?"}, {"role": "assistant", "content": "In that case, you can use 'Non \u00e8 vostro' or 'Non \u00e8 il tuo' (more formal) is not used, but 'Non \u00e8 il vostro' or 'Non \u00e8 vostro' can be used for formal, as 'il tuo' is informal. 'Il vostro' or 'vostro' is formal. 'Vostro' is formal and can be used as 'Non \u00e8 vostro'."}, {"role": "user", "content": "What if I am speaking to someone I don't know."}, {"role": "assistant", "content": "When speaking to someone you don't know, it's generally best to use the formal form 'Non \u00e8 vostro'."}, {"role": "user", "content": "What about 'Non \u00e8 tuo'?"}, {"role": "assistant", "content": "While 'Non \u00e8 tuo' is a correct translation, it's informal and typically used with people you know well, like friends or family. So, in a formal situation or when speaking to someone you don't know, 'Non \u00e8 vostro' is a safer choice."}]