You need to learn and do all kinds of manners. Treat customers warmly and seriously. Try not to be indifferent to people who seem to have no desire and strength to buy, because you are still a newcomer and they are all your potential customers. Of course, if you have time, learn more about Buick's history and cultural spirit, learn more about the performance of each car, their respective advantages and disadvantages, and then show your professionalism when introducing it to customers. Let customers feel the culture of this car with you. In a word, all the people who enter the store are potential customers. You need to develop into your own customers with your enthusiasm, attention to nuances and your professionalism and skills in introducing vehicles. Finally reached a deal with the company.