Update tokenizer_config.json

tokenizer_config.json

@@ -34,7 +34,29 @@
     "</s>"
   ],
   "bos_token": "<s>",
-  "chat_template": "{%- if message['role'] == 'system' -%}{{- '' + message['content'] + '\n\n' -}}{%- else -%}{%- if message['role'] == 'user' -%}{{-'### Instruction:\n' + message['content'] + '\n\n'-}}{%- else -%}{{-'### Response:\n' + message['content'] + '\n\n' -}}{%- endif -%}{%- endif -%}",
+  "chat_template": "{%- set ns = namespace(found=false) -%}
+{%- for message in messages -%}
+    {%- if message['role'] == 'system' -%}
+        {%- set ns.found = true -%}
+    {%- endif -%}
+{%- endfor -%}
+{%- if not ns.found -%}
+    {{- '' + 'Below is an instruction that describes a task. Write a response that appropriately completes the request.' + '\n\n' -}}
+{%- endif %}
+{%- for message in messages %}
+    {%- if message['role'] == 'system' -%}
+        {{- '' + message['content'] + '\n\n' -}}
+    {%- else -%}
+        {%- if message['role'] == 'user' -%}
+            {{-'### Instruction:\n' + message['content'] + '\n\n'-}}
+        {%- else -%}
+            {{-'### Response:\n' + message['content'] + '\n\n' -}}
+        {%- endif -%}
+    {%- endif -%}
+{%- endfor -%}
+{%- if add_generation_prompt -%}
+    {{-'### Response:\n'-}}
+{%- endif -%}",
   "clean_up_tokenization_spaces": false,
   "eos_token": "</s>",
   "legacy": true,