3 sentences

1. 这位售货员非常有礼貌。

   zhè wèi shòu​huò​yuán fēi​cháng yǒu lǐ​mào.

   This shop assistant is very polite.

   Source: Dong Chinese Dictionary

2. 如果你不清楚价格，可以向售货员询一下。

   rú​guǒ nǐ bù qīng​chu jià​gé, kě​yǐ xiàng shòu​huò​yuán xún yī​xià.

   If you are not sure about the price, you can ask the sales assistant.

   Source: Dong Chinese Dictionary

3. 他从口袋里掏出一张百元大票递给售货员。

   tā cóng kǒu​dài lǐ tāo​chū yī zhāng bǎi yuán dà​piào dì​gěi shòu​huò​yuán.

   He took a hundred-yuan bill out of his pocket and handed it to the salesperson.

   Source: Dong Chinese Dictionary