[P] Need advise on creating a conversational Chatbot for my University

Hey everyone! I need some advise on creating a conversational chatbot for my University as my Final Year Project (FYP).

2024 will be last year for my BSCS degree and we have to build an application or something in the last year. So, I thought of creating a chatbot (just like GPT) to help students (who have admission queries). Most of the time, students or parents will have to call University for various questions and then they have to wait to ACTUALLY talk to the admins office people.

Now, talking in terms of coding/programming, I have created a basic PDFbot by using LLama2, Huggingface and Pinecone. Its very very easy and yes its fairly inaccurate too. The PDF that I am using rn will be replaced by the dataset that I gather in order to create the bot for my Uni, but it will also be inaccurate as this one. Also, the chatbot that I have made is just based on this one function called "similarity_search()" and I am literally passing query of the user to this function which then tries to find the most relevant answer by the embeddings from knowledge base.

How do I make this accurate? I know using the OpenAI model will make it accurate, but its paid as well, idk how will I manage to do that. Plus, i reckon there will be a simple function there too which doesn't make me a good programmer I think. I really want to do something good and unique for once. I have dreamt about leaving back something in my Uni that has my name over it. Can I do something where I get to make a mini-language model or something like that? Will it be too complex for me to handle? (I consider myself a beginner to this programming world)

1- I am planning to create a dynamic dataset which will also include any event that's going to happen in our University.
2- I am also planning to make the chatbot intelligent enough to consult confused students.
3- Chatbot will also include information about each and every faculty member. Their qualifications, research papers and other info in general.

It would be a relief if any of the experts give me a roadmap on this, it will be genuinely a stress relief for me. I am trying to get done with at least 70% of the work before the start of the next year so that I don't have to work much in the next year.