Build a compelling customer support bot using LangGraph on top of the provided fake SQL data for a music company.

"The process was basically a short intro chat, then a LangSmith demo take-home, then a much heavier LangGraph build-and-present round. The first demo felt practical and customer-facing, while the second one was way more about whether I actually understood the technical intricacies of LangGraph. I ended up getting the offer, and the whole thing left me feeling like they were very accommodating and reasonable, even though the ramp on their tools was genuinely brutal."