College Timetable Assistant

A conversational timetable assistant built with LangGraph and Mistral AI. Students can ask natural-language questions about their class schedule (e.g. "what is the timetable of aiml section b" or "does gangadhar sir teach any subject to aiml section b"), and the pipeline extracts the class/section, validates it, retrieves the matching timetable, and generates a natural, conversational answer.

How It Works

The assistant is built as a LangGraph state machine with four stages

START
  │
  ▼
extractor  ──► validator ──┬──► finder ──► final_writer ──► END
 (LLM)         (tool)      │     (I/O)       (LLM)
                            │
                            └──► final_writer ──► END
                                 (invalid path)