Update app.py

app.py

@@ -149,6 +149,7 @@ def bot(history):
             temp_str = "".join(response).replace("▁"," ")
             if len(temp_str) > 2:
                 if temp_str[-2:] in stop_string:
+                    response = response[:-2]
                     break
             response.append(elm)
             history[-1][1] = prefix + "".join(response).replace("▁"," ")