I would like to use Promptlayer for a prompt in which part of the prompt is past conversation history that's structured as {"role": "user", "content": ...} and {"role": "assistant", "content": ...} messages. From what I could tell, it's not possible to inject messages dynamically into a Promptlayer prompt, only strings.

I noticed the Recipe example uses RAG, but it only creates 1 User message with {recipes_string}, which is not exactly what I need.