{%- if messages and messages[0].role == 'system' %}
{{- '<|im_start|>system\n' + messages[0].content + '<|im_end|>\n' }}
{%- set loop_messages = messages[1:] %}
{%- else %}
{%- set loop_messages = messages %}
{%- endif %}
{%- for message in loop_messages %}
{{- '<|im_start|>' + message.role + '\n' }}
{%- if message.role == 'assistant' %}
{% generation %}{{- message.content + '<|im_end|>' }}{% endgeneration %}{{- '\n' }}
{%- else %}
{{- message.content + '<|im_end|>\n' }}
{%- endif %}
{%- endfor %}
{%- if add_generation_prompt %}
{{- '<|im_start|>assistant\n' }}
{%- if enable_thinking is not defined or not enable_thinking %}
{{- '<think>\n\n</think>\n\n' }}
{%- endif %}
{%- endif %}