Good listener - In order to know your customer better , customer service team must know how to be a good listener. While communicating with the customers , listening more will help them collecting important information about their overall behaviours, wants and needs.
Empathy - Empathy is to be in another's shoes. It is basically to think from another person's viewpoint and understand deeply what they would do when they were in the same situation . Customer service team should be empathetic towards the customers and also think from their side. This will help them better understanding the situation of customers and improving accordingly.
Knowledge about your product - It is said when you don't know enough about your thing, you could not be able to make others understand about it. So, customer service team should know more about their products and services in order to explain the customers its features and guarantee schemes etc.
Transparency- Their should be transparency in selling. Customer must be aware of every feature, any advantage or disadvantage so that if anything wrong happens with the product , he knows about it or can take necessary precautions .
Customer feedback- Taking customer feedback is must for a business. With feedback, one can know what their customers want and if anything wrong with their product.