Question

___ ir al cine el sabado? si, ?a que hora

Answer 1

it’s quieres ir al cine el sábado? si, a qué hora and just add whatever time if that’s in the question too

Answer 2

Quieres

The full answer looks like this:

Question: Quieres ir al cine el Sabado?

Answer: Si, a que hora?

Step-by-step explanation:

A question is being asked therefore you use "quieres" which in this case means "do you want to"