Update prompts.yaml

prompts.yaml

@@ -319,6 +319,10 @@
   "report": |-
     Here is the final answer from your managed agent '{{name}}':
     {{final_answer}}
-"final_answer": |-
-  The final answer is:
-  {{final_answer}}
+"final_answer": 
+  pre_messages: 
+      -role: user
+      content: "Please provide the final answer."
+  post_messages: |-
+      -role: user
+      content: "Thank you for your assistance."