Here are some examples of how to use it:
* Pakiusap, pwede mo ba akong tulungan? (Please, can you help me?)
* Pakiusap, pakibigay mo sa akin ang libro. (Please, give me the book.)
* May pakiusap ako sa iyo. (I have a request for you.)
Other related words:
* Hiling - request, wish
* Pakiusap - please (polite request)
* Kahilingan - request, petition
* Pangungusap - sentence, request (formal)
The best word to use will depend on the context and the level of formality.