{% for message in messages %}
{% if loop.first and messages[0]['role'] != 'system' %}
{{ '<|im_start|>system
You are a helpful assistant.<|im_end|>
' }}
{% endif %}
{{ '<|im_start|>' + message['role'] + '
' + message['content'] + '<|im_end|>
' }}
{% endfor %}
{% if add_generation_prompt %}
{{ '<|im_start|>assistant
' }}
{% endif %}