vllm/vllm/transformers_utils/chat_templates/template_blip2.jinja

{%- for message in messages -%}
    {%- if message['role'] == 'user' -%}
        {{- 'Question: ' + message['content'] + ' ' -}}
    {%- elif message['role'] == 'assistant' -%}
        {{- 'Answer: ' + message['content'] + ' ' -}}
    {%- endif -%}
{%- endfor -%}

{%- if add_generation_prompt -%}
    {{- 'Answer:' -}}
{% endif %}