Echo bot

app.py

@@ -1,3 +1,12 @@
 import streamlit as st
 
-st.write("Hello World")
+st.title("Echo Bot")
+
+# Initialize chat history
+if "messages" not in st.session_state:
+    st.session_state.messages = []
+
+# Display chat messages from history on app rerun
+for message in st.session_state.messages:
+    with st.chat_message(message["role"]):
+        st.markdown(message["content"])