chat_template.jinja

{%- if messages and messages[0].role == 'system' -%}
    {{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' -}}
{%- endif -%}
{%- for message in messages -%}
    {%- if message.role == "user" -%}
        {{- '<|im_start|>user\n' + message.content + '<|im_end|>\n' -}}
    {%- elif message.role == "system" and not loop.first -%}
        {{- '<|im_start|>system\n' + message.content + '<|im_end|>\n' -}}
    {%- elif message.role == "assistant" -%}
        {{- '<|im_start|>assistant\n' + message.content + '<|im_end|>\n' -}}
    {%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt -%}
    {{- '<|im_start|>assistant\n' -}}
{%- endif -%}