导购口语:

Do you think the skirt length is tight?
你觉得这裙子长度合适吗？
How about this one? It's a T.C. design. It's very elegant, isn't it?
这条可以吗？这是T.C.的设计。很优雅的，不是吗？
You're welcome to exchange it for another size if it doesn't fit.

语句解析:

如果要表示“欢迎某人做某事”，除了用hope / wish外，也可以用形容词性的welcome，句型是sb. Be welcome to do sth.

情景再现:

Well, for a vest you don't have much choice in style. But some new ones will be coming in within a few days.
噢，背心的款式并没有多少选择。不过这几天之内会有新的背心送来。