CHAIN:
- find out if question is relevant or not
- convert to standalone question
- query documents
- ask llm to format answer
DOCUMENTS:
- skills
- customers
- question about Pierre (who are you, age, language, availability)
- question about skill
- question about work experience
- question about task
- question about this chat (how was it done)
- create standalone question
- find out question's category
- use category's retriever
- llm formatting