{{ bos_token or '' }}{% for message in messages %}{%- if (loop.index % 2 == 1 and message['role'] != 'user') or (loop.index % 2 == 0 and message['role'].lower() != 'assistant') -%}{{ raise_exception('Conversation roles must alternate user/assistant/user/assistant/...') }}{%- endif -%}{% if message['content'] is not string %}{% for content in message['content'] %}{% if content['type'] == 'image' %}{{ '<image> ' }}{% endif %}{% endfor %}{% endif %}{{ message['role'].capitalize() + ': ' }}{% if message['content'] is string %}{{ message['content'] + ' ' }}{% else %}{% for content in message['content'] %}{% if content['type'] == 'text' %}{{ content['text'] + ' ' }}{% endif %}{% endfor %}{% endif %}{% endfor %}{% if add_generation_prompt %}{{ 'Assistant:' }}{% endif %}