求英语达人一个问题a shop-assistant was asked to remove the dust from

求英语达人一个问题
a shop-assistant was asked to remove the dust from some of the bronze statues in order that our friend might have a good look at these objects before making up her mind to buy.Under such a situation,it was the assistant's duty either to do what she was asked to do or to explain why she was unable to comply with such a request.问应怎样理解这段话 这个shop-assistant有哪里做错的吗 引得顾客生气