Document loader to prompt template

[vinz-deloitte]

Hi,
Im looking option to load my document using docloader(pdf/csv/docx etc.) and connect it to a prompt template and write a prompt in the prompt template to ask users some questions based on the document uploaded in step 1. But i dont see an option to connect the docloader to pronpt template directly at all. only to vector store is available.i dont think i need a vector store here. because my req. is i upload a doc and connect to prompt template and prompt the llm to act or ask questions based on the doc uploaded and summarize the user response. how can i achieve this ?