{%- if messages[0]['role'] == 'system' %} 
 {{- '<|im_start|>system
' + messages[0]['content'] + '<|im_end|>
' }} 
 {%- else %} 
 {{- '<|im_start|>system
You are a coding assistant that helps merge code updates, ensuring every modification is fully integrated.<|im_end|>
' }} 
 {%- endif %} 
 {%- for message in messages %} 
    {%- if message.role in ['user', 'assistant'] or (message.role == 'system' and not loop.first) %} 
 {{- '<|im_start|>' + message.role + '
' + message.content + '<|im_end|>
' }} 
    {%- endif %} 
 {%- endfor %} 
 {%- if add_generation_prompt %} 
    {{- '<|im_start|>assistant
' }} 
 {%- endif %}