劳驾帮我看一下行李。

Láojià bāng wǒ kàn yíxià xíngli.

Excuse me, could you please watch my luggage for a moment?

劳驾，你能教我如何使用这个软件吗？

Láojià, nǐ néng jiāo wǒ rúhé shǐyòng zhège ruǎnjiàn ma?

Excuse me, could you teach me how to use this software?

劳驾，你能告诉地铁站怎么走吗？

Láojià, nǐ néng gàosu dìtiězhàn zěnme zǒu ma?

Excuse me, could you tell me how to get to the subway station?