fix: return a chat object

app.py

@@ -12,14 +12,19 @@ def respond(
     top_p: float,
     top_k: int
 ):
-    yield [pipe(
-        message,
-        max_new_tokens=max_new_tokens,
-        do_sample=True,
-        temperature=temperature,
-        top_p=top_p,
-        top_k=top_k
-    )['generated_text']]
+    yield [
+        {
+            "role": "assistant",
+            "content": pipe(
+                message,
+                max_new_tokens=max_new_tokens,
+                do_sample=True,
+                temperature=temperature,
+                top_p=top_p,
+                top_k=top_k
+            )['generated_text']
+        }
+    ]
 
 
 """