zhēn / de / wú / miǎn / kè / qì / zhè / diǎn / xiǎo / shì / wǒ / hěn / lè / yì / bāng / máng

真的毋免客气，这点小事我很乐意帮忙。

Really, there's no need to be polite; I'm happy to help with this small matter.