{{- '<|im_start|>system
You are a helpful assistant.<|im_end|>
' }}
{%- for message in messages %}
    {{- '<|im_start|>' + message.role + '
' + message.content + '<|im_end|>' + '
' }}
{%- endfor %}
{%- if add_generation_prompt %}
    {{- '<|im_start|>assistant
' }}
{%- endif %}