The question sounds like the statement
A yes/no question is answered with sì (yes) or no (no). In Italian you need no helper word and no reshuffling: the question has the same words in the same order as the statement.
Same words, different melody
Parli italiano.
You speak Italian. (voice falls)
Parli italiano?
Do you speak Italian? (voice rises)
Hai fame.
You are hungry. (voice falls)
Hai fame?
Are you hungry? (voice rises)
Everyday questions
Tutto bene?
Everything okay?
Va bene?
Is that alright?
Capito?
Got it?
Abiti a Roma?
Do you live in Rome?
Posso?
May I?
Answers: sì and no
A short sì or no is enough; the full sentence sounds more natural. After no, the verb still takes non (it does the job of English don't). And sì (yes) has an accent, while si (oneself) does not.
Sì, parlo italiano.
Yes, I speak Italian.
Sì, ho fame.
Yes, I am hungry.
No, non parlo italiano.
No, I do not speak Italian.
No, non ho fame.
No, I am not hungry.
