Put "mái" at the end of the sentence.
Q: Khun chɔɔ̂p
gin pizza mái (Do you like to eat Piazza?)
A1 : chɔɔ̂p (yes i like) ----> answer yes by repeating the verb (chɔɔ̂p)
A2 : mâi chɔɔ̂p ( no i don't) ---> answer no by put negative word (mâi) in front of the verb