update mlc-chat-config

params/mlc-chat-config.json

@@ -1,7 +1,18 @@
 {
     "model_lib": "openchat-3.5-1210-q4f32_1",
     "local_id": "openchat-3.5-1210-q4f32_1",
-    "conv_template": "mistral_default",
+    "conv_template": "llama-2",
+    "conv_config": {
+        "system": "<|im_start|>system: You are an AI assistant that follows instructions extremely well. Help as much as you can.",
+        "roles": [
+            "<|im_start|>user",
+            "<|im_start|>assistant"
+        ],
+        "seps": [
+            "<|im_end|>\n"
+        ],
+        "stop_str": "<|im_end|>"
+    },
     "temperature": 0.7,
     "repetition_penalty": 1.0,
     "top_p": 0.95,