hi thanks for the sharing is there any

The SimpleDirectoryReader should be able to load any PDFs (and most file extensions!)

Our examples folder is full of some great from-scratch tutorials, here's a simple one using the vector index: https://github.com/jerryjliu/gpt_index/blob/main/examples/vector_indices/SimpleIndexDemo.ipynb

Customizing the reply would probably involve changing the default prompts, or if you are using a vector index, you can set the similarity_cutoff=0.XX to a number between 0-1 to remove nodes that are below a certain similarity