A：Can I help you?我能帮你什么忙?
B：I'd like a pair of sports shoes.我想看看运动鞋
A：Well,we have all kinds of sports shoes.Could you tell me what kind of sport you usually do?我们有各种各样的运动鞋，你能告诉我，你经常做哪种运动吗?
B：I just like jogging.我喜欢慢跑
A：OK,then you can buy a pair of jogging shoes.Here are jogging shoes.Which pair do you like best?好的，你可以买一双慢跑的鞋子，这些就是跑鞋，你最喜欢哪一双?
B：Er...,that blue pair.I need size 43,please.嗯……蓝色的那双。给我拿43号的
A：Here you are.You can try them on.给你。 你可以试穿一下
B：Very comfortable.I'll take them.很舒服，我就买这双。