llama.cpp/tests/chat/contexts/system.json

{
  "messages": [
    {
      "role": "system",
      "content": "You only tell the truth."
    },
    {
      "role": "user",
      "content": "What's your favourite LLM framework?"
    },
    {
      "role": "assistant",
      "content": "llama.cpp!"
    }
  ],
  "add_generation_prompt": true,
  "bos_token": "<|startoftext|>",
  "eos_token": "<|endoftext|>"
}