Fix typo

app.py

@@ -45,7 +45,7 @@ user_message = HumanMessage(content="Do you think Kraft Dinner constitues fine d
 assistant_message = AIMessage(content="Egads! No, it most certainly does not!")
 
 
-isecond_user_message = HumanMessage(content="What about Red Lobster, surely that is fine dining!")
+second_user_message = HumanMessage(content="What about Red Lobster, surely that is fine dining!")
 
 # create the list of prompts
 list_of_prompts = [