In order to find out what product characteristic or other demands which the customer requests, I make some related questions. It is usually useful to make a conversation, so you can examine any special requests or preferences. Once I receive that information, I will tell the customer some ideas and show how they satisfy the customer's needs. Customers only have lots of information. This information can come to customers from different sources, and it is normally not able to say which product is the one they want. Through the conversation, the customer can express their expectations from the product and up to them, you can give the exact advice.