What (do | does) you want? || I ( want | wants) to fly a kite.
What do you want? || I want to fly a kite.
(Do | Does) you want to fly a kite? || Yes, I (do | does).
Do you want to fly a kite? || Yes, I do.
What (do | does) you want? || I ( want | wants) swim in the river.
What do you want? || I want to swim in the river.