{% set loop_messages = messages %}
{%- for message in loop_messages %}
{% set content = '<|start_header_id|>' + message['role'] + '<|end_header_id|>\n\n' + message['content'] | trim + '<|eot_id|>' %}
    {%- if loop.index0 == 0 %}
{% set content = bos_token + content %}
    {%- endif %}{{ content }}
{%- endfor %}
{%- if add_generation_prompt %}
{{ '<|start_header_id|>assistant<|end_header_id|>\n\n' }}
{%- endif %}