First of all, the tone should be calm, and try to talk to customers in the tone of friends on the phone, so that customers will feel relaxed and natural.

Then the opening remarks. Don't start by saying, "What should I do? Need it? " . This is definitely impossible. You can pretend to be familiar with it, such as "Hello, I called you last time (to your shop). How's business recently? " In this way, customers will think about your identity, and you will take the opportunity to cut to the chase.

Of course, there are many ways to find some books on sales to learn.