[QST] Assistant without the RAG service

**What is your question?**

How can i deploy the assistant without the rag service and with a API called model, not a self hosted one?

-----
By submitting this issue, you agree to follow our [code of conduct](https://docs.rapids.ai/resources/conduct/) and our [contributing guidelines](https://github.com/jarmak-nv/rapids-repo-template/blob/main/CONTRIBUTING.md).
