added try except

app.py

@@ -14,7 +14,8 @@ else:
         {"role": "system", "content": "My AI Assistant"},
     ]
 
-    def chatbot(input):
+def chatbot(input):
+    try:
         if input:
             messages.append({"role": "user", "content": input})
             chat = openai.ChatCompletion.create(
@@ -23,6 +24,8 @@ else:
             reply = chat.choices[0].message.content
             messages.append({"role": "assistant", "content": reply})
             return reply
+    except openai.error.OpenAIError as e:
+        return "System is at capacity right now.Please try again later"
 
 gr.Interface(
     fn=chatbot,