Think of the seller as your client with a problem. Their problem is that they have a home that they would like to sell, or that they need to sell. By asking them questions, you will find out about:
Their reasons and urgency for selling
What they expect from you and your company
Concerns about property condition and required enhancements
Concerns about the cost of the process
Their fears of disclosure of negative facts
By all means, let them ask any questions they want, but go in with a script of the questions you need to ask in order to serve them well as clients. It's usually best to try and get them to let you get some facts at the beginning. You take control this way and they'll usually get all their questions answered anyway. It will just be in the framework of a consultant helping them with problems, rather than a real estate agent fighting for their listing.
Remember that earlier you told them you were different....now you're showing them how.