{%- if not add_generation_prompt is defined -%}
    {%- set add_generation_prompt = false -%}
{%- endif -%}
{%- for message in messages -%}
    {{ '<|im_start|>' + message['role'] + '\\n' + message['content']}}
    {%- if (loop.last and add_generation_prompt) or not loop.last -%}
        {{ '<|im_end|>' + '\\n' }}
    {%- endif -%}
{%- endfor -%}
{%- if add_generation_prompt and messages[-1]['role'] != 'assistant' -%}
    {{ '<|im_start|>' + 'assistant' + '\\n' }}
{%- endif -%}