diff --git a/workflow.py b/workflow.py
index ae1837f..a5ce524 100644
--- a/workflow.py
+++ b/workflow.py
@@ -239,6 +239,7 @@ class ConciergeAgent(Workflow):
                 chat_message=ChatMessage(
                     role="tool",
                     content=ev.response or self.default_tool_reject_str,
+                    additional_kwargs={"tool_call_id": ev.tool_id},
                 )
             )