What do you want?
Definition 1 of 3
Pro Tip 1/3Clarify Choices
Use it to ask for a specific choice between options you've given. 
We have pizza or salad for dinner, what do you want?
Pro Tip 2/3Genuine Inquiry
Ask with a neutral tone to show you are ready to listen. 
You seem to have something on your mind. What do you want?
Pro Tip 3/3Offer Help
Say it to offer assistance without being pushy. 
I’m here to help. What do you want?