{%- if not add_generation_prompt is defined -%}{%- set add_generation_prompt = false -%}{%- endif -%}{%- for message in messages -%}{{ '<|im_start|>' + message['role'] + '\n' + message['content'] + '<|im_end|>' + '\n' }}{%- endfor -%}{%- if add_generation_prompt -%}{{ '<|im_start|>assistant\n' }}{%- endif -%}