Update app.py

app.py

@@ -92,4 +92,18 @@ st.sidebar.markdown("[Visit us at](https://www.insighttherapysolutions.com/)")
 #msgs = StreamlitChatMessageHistory(key="langchain_messages")
 
 # --- Main Content ---
-st.markdown("## 🔍 Chatbot For AI Engineer test:")
+st.markdown("## 🔍 Chatbot For AI Engineer test:")
+
+if len(msgs.messages) == 0:
+    msgs.add_ai_message("Hi! How can I assist you today?")
+
+
+for msg in msgs.messages:
+    st.chat_message(msg.type).write(msg.content)
+
+if prompt := st.chat_input():
+    st.chat_message("human").write(prompt)
+
+    with st.chat_message("assistant"):
+        message_placeholder = st.empty()
+        full_response = ""