When you ask questions during a conversation, you let people know that you care about them, and that you are interested in what they have to say.
You also send a subtle message that you are a bright, and inquisitive person who would like to know more.
And best of all it shows that you are really listening.
Tip: Ask a question…then shut up. This is a foolproof way to listen. Think of yourself as an interviewer
A wise man can learn more from a foolish question than a fool can learn from a wise answer.