diff --git a/ai_talks/chat.py b/ai_talks/chat.py
index 75b90f6..56fb34c 100644
--- a/ai_talks/chat.py
+++ b/ai_talks/chat.py
@@ -3,7 +3,6 @@ from random import randrange
 
 from AMUseBotBackend.src.DP.dp import DP
 from AMUseBotBackend.src.DST.dst import DST
-from AMUseBotBackend.src.NLU.nlu import NLU
 
 import graphviz
 import streamlit as st
@@ -13,7 +12,7 @@ from src.utils.lang import en
 
 
 if __name__ == '__main__':
-
+    
     # --- PATH SETTINGS ---
     current_dir: Path = Path(__file__).parent if "__file__" in locals() else Path.cwd()
     css_file: Path = current_dir / "src/styles/.css"
@@ -61,9 +60,6 @@ if __name__ == '__main__':
         st.session_state.dst = DST(recipe_path="AMUseBotFront/ai_talks/AMUseBotBackend/recipe/", dialog_path="AMUseBotFront/ai_talks/AMUseBotBackend/dialog/")
     if "dp" not in st.session_state:
         st.session_state.dp = DP(dst=st.session_state.dst)
-    if "nlu" not in st.session_state:
-        st.session_state.nlu = NLU(intent_dict_path='AMUseBotFront/ai_talks/AMUseBotBackend/utils/intent_dict.json',
-                                model_identifier_path='AMUseBotFront/ai_talks/AMUseBotBackend/models/NLU/roberta-base-cookdial.txt')
 
 def show_graph():
     # Create a graphlib graph object
diff --git a/ai_talks/src/utils/conversation.py b/ai_talks/src/utils/conversation.py
index aa8b3ef..28f2c46 100644
--- a/ai_talks/src/utils/conversation.py
+++ b/ai_talks/src/utils/conversation.py
@@ -7,6 +7,14 @@ from streamlit_chat import message
 from .stt import show_voice_input
 from .tts import show_audio_player
 
+from AMUseBotBackend.src.DP.dp import DP
+from AMUseBotBackend.src.DST.dst import DST
+from AMUseBotBackend.src.NLU.nlu import NLU
+
+@st.cache_resource
+def get_nlu_model(intent_dict_path = 'AMUseBotFront/ai_talks/AMUseBotBackend/utils/intent_dict.json', model_identifier_path = 'AMUseBotFront/ai_talks/AMUseBotBackend/models/NLU/roberta-base-cookdial.txt'):
+    return NLU(intent_dict_path=intent_dict_path,
+                            model_identifier_path=model_identifier_path)
 
 def clear_chat() -> None:
     st.session_state.generated = []
@@ -17,7 +25,6 @@ def clear_chat() -> None:
     st.session_state.costs = []
     st.session_state.total_tokens = []
 
-
 def get_user_input():
     # match st.session_state.input_kind:
     #     case st.session_state.locale.input_kind_1:
@@ -84,7 +91,7 @@ def show_conversation() -> None:
     if len(st.session_state.past):
         user_message = st.session_state.past[-1]
         # ai_content = "Dummy respone from AI"
-        intents = st.session_state.nlu.predict(user_message)
+        intents = get_nlu_model().predict(user_message)
         st.session_state.dst.update_dialog_history(
                                     system_message='', 
                                     user_message=user_message,