{% 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 %}