When I join sales, I learned and used techniques in asking question. its called probing.
For an example, I seldom ask people a "close" question, instead I use "open"question. For an example of example:
"Can I come to see you next week?" This will be a "close" question, coz you can answer "Yes" or "No", in a way, rejection comes quite easily.
"Which day are you free to meet up next week?" This is an "open" question, leading you to an result I desired.
but Now, I feel its not good to probe with a open question, because its sort of not addressing one feelings, of caring what one really wants. If ones reject, it must have for a certain reason.
The ediot who spread this probing technique sucks, if customers are King, would you probe the King?