diff --git a/src/nlug.ts b/src/nlug.ts
index cd6c88c..81c5088 100644
--- a/src/nlug.ts
+++ b/src/nlug.ts
@@ -38,20 +38,13 @@ const nluMapping: NLUMapping = {
   "thursday": [{
     type: "answer",
     content: "thurday",
-  }],
-
-  "negative" : [{
-    type : "NLUFail",
-    content : "I don't understand"
-  }],
-  
-
+  }]
 };
 const nlgMapping: NLGMapping = [
   [{ type: "ask", content: WHQ("booking_course") }, "Which course?"],
   [{type: "ask",content : WHQ("course_day")},"What day is the lecture?"],
   [{ type: "greet", content: null }, "Hello! You can ask me anything!"],
-  [{type: "NLUFail",content:null},"I don't understand."],
+  [{type: "NLUFail",content:null},"Sorry, I didn't understand."],
   [
     {
       type: "answer",
diff --git a/src/rules.ts b/src/rules.ts
index 881061b..d08a87a 100644
--- a/src/rules.ts
+++ b/src/rules.ts
@@ -261,15 +261,24 @@ export const rules: Rules = {
     ) {
       const q = is.private.agenda[0].content as Question;
       if (is.private.plan[0] && is.private.plan[0].type === "raise") {
+       
         newIS = {
           ...is,
           next_moves: [ ...is.next_moves, { type: "ask", content: q } ],
           private: { ...is.private, plan: [...is.private.plan.slice(1)] },
         };
-      } else {
+      }
+      if (is.shared.qud.length >0 &&  Array.isArray(is.shared.lu?.moves) &&  is.shared.lu?.moves.length === 0) {
+        const NLUFail =  {type: "NLUFail", content : null } as Move ;
         newIS = {
           ...is,
-          next_moves: [ ...is.next_moves, { type: "ask", content: q } ],
+          next_moves: [ ...is.next_moves, NLUFail, { type: "ask", content: q } ],
+        };
+      }
+       else {
+        newIS = {
+          ...is,
+          next_moves: [ ...is.next_moves,  { type: "ask", content: q } ],
         };
       }
       return () => newIS;
@@ -322,14 +331,14 @@ export const rules: Rules = {
   negative_feedback : ({is}) => {
     if (Array.isArray(is.shared.lu?.moves) &&  is.shared.lu?.moves.length === 0) {
       const NLUFail =  {type: "NLUFail", content : null } as Move ;
-      const moves = [NLUFail] ; 
-    if (is.shared.qud.length>0) {
+      /*const moves = [NLUFail] ; ;
+      if (is.shared.qud.length >0) {
       const repeatQuestion = {type: "ask", content : is.shared.qud[0]} as Move ;
       moves.push(repeatQuestion)
-      }
+      console.log (`----------------${moves}------------`) ;*/
       return () => ({
         ...is,
-        next_moves : [...is.next_moves, moves[0] && moves[1]] 
+        next_moves : [...is.next_moves, NLUFail] 
       })
     }
   },
diff --git a/test/dme.test.ts b/test/dme.test.ts
index 6499266..fe178ea 100644
--- a/test/dme.test.ts
+++ b/test/dme.test.ts
@@ -148,11 +148,11 @@ describe("DME tests", () => {
     runTest([
       { speaker: "sys", message: "Hello! You can ask me anything!" },
       { speaker: "usr", message: "blabla"},
-      { speaker: "sys", message: "I don't understand." },
+      { speaker: "sys", message: "Sorry, I didn't understand." },
       { speaker: "usr", message: "Where is the lecture?" },
       { speaker: "sys", message: "Which course?" },
       { speaker: "usr", message: "blabla"},
-      { speaker: "sys", message: "I don't understand.Which course?" },
+      { speaker: "sys", message: "Sorry, I didn't understand. Which course?" },
 
     ]);
   });