1.understand, the customers wants solutions from you in the form of you products and services.
eg:- if a guy buys petrol from a gas station, travelling is his aim,find how you can simplify that.
2. keep things as simple as you could. Just like drinking a glass of clean water.
3.last but not the least, LISTEN to them, every customer comes with an invisible tag written on them “asking will you listen to me” your answer should be yes,indeed .