diff --git a/model/DialogueState.py b/model/DialogueState.py
new file mode 100644
index 0000000..980bb2d
--- /dev/null
+++ b/model/DialogueState.py
@@ -0,0 +1,7 @@
+class DialogueState:
+
+    def init(self):
+        self.currentActs = []
+        self.previousActs = []
+        self.botName = 'Dia'
+        self.date = None
\ No newline at end of file
diff --git a/presenter/chatbot_modules/DialoguePolicy.py b/presenter/chatbot_modules/DialoguePolicy.py
index 78af689..6515838 100644
--- a/presenter/chatbot_modules/DialoguePolicy.py
+++ b/presenter/chatbot_modules/DialoguePolicy.py
@@ -1,3 +1,10 @@
+from model import DialogueState
+
 class DialoguePolicy:
     pass
 
+    def init(self):
+        pass
+
+    def resolveSystemActs(self, dialogueState):
+        pass
\ No newline at end of file
diff --git a/presenter/chatbot_modules/DialogueStateTracker.py b/presenter/chatbot_modules/DialogueStateTracker.py
index 588a6dc..78b4899 100644
--- a/presenter/chatbot_modules/DialogueStateTracker.py
+++ b/presenter/chatbot_modules/DialogueStateTracker.py
@@ -1,3 +1,40 @@
-class DialogueStateTracker:
-    pass
+from model import DialogueState
 
+class DialogueStateTracker:
+
+    def init(self, dialogueState):
+        pass
+
+    def processinformFrame(self, userActsFrame, dialogueState):
+       """
+
+       :param userActsFrame:
+       :param dialogueState:
+       :return:
+       """
+
+
+    def processUserAct(self, userActsFrame, dialogueState):
+        """
+
+        :param userActsFrame: input of user acts incoming
+        :return: dialogueState
+        """
+        dialogueState.currentActs=userActsFrame
+
+        if userActsFrame.act == 'hello()':
+            pass
+        elif userActsFrame.act == 'request':
+            pass
+        elif userActsFrame.act == 'inform':
+            dialogueState=self.processinformFrame(userActsFrame, dialogueState)
+        else:
+            pass
+        return dialogueState
+
+
+    # def setDialogueState(self, dialogueState):
+    #     self.DialogueState=dialogueState
+    #
+    # def getDialogueState(self, dialogueState):
+    #     return self.DialogueState
\ No newline at end of file