Community Service filling out forms for citizens

I want to build a gpt or API tool that allows community members that need services like shelters, food assistance, energy assistance and the like to have a chat convo to determine eligibility for services and then…

gather necessary info to fill out the PDF forms required to apply for the services they qualify for.

I am a programmer So can work with most of the tools available, BUT I am wondering if anyone has done this with an assistant or gpt? Fill out PDFs?