Update app/models/assistant.py

app/models/assistant.py

@@ -0,0 +1,17 @@
+class Assistant:
+
+    def __init__(self):
+        self.ready = True
+
+    def answer(self, message: str):
+
+        response = f"Echo: {message}"
+
+        sources = []
+
+        contexts = []
+
+        return response, sources, contexts
+
+    def cleanup(self):
+        self.ready = False