instruction_template: |-
  {%- set found_item = false -%}
  {%- for message in messages -%}
      {%- if message['role'] == 'system' -%}
          {%- set found_item = true -%}
      {%- endif -%}
  {%- endfor -%}
  {%- if not found_item -%}
      {{- '<|im_start|>system\n' + '' + '<|im_end|>\n' -}}
  {%- endif %}
  {%- for message in messages %}
      {%- if message['role'] == 'system' -%}
          {{- '<|im_start|>system\n' + message['content'] + '<|im_end|>\n' -}}
      {%- else -%}
          {%- if message['role'] == 'user' -%}
              {{-'<|im_start|>user\n' + message['content'] + '<|im_end|>\n'-}}
          {%- else -%}
              {{-'<|im_start|>assistant\n' + message['content'] + '<|im_end|>\n' -}}
          {%- endif -%}
      {%- endif -%}
  {%- endfor -%}
  {%- if add_generation_prompt -%}
      {{-'<|im_start|>assistant\n'-}}
  {%- endif -%}