diff --git a/packages/core.gbapp/services/GBMinService.ts b/packages/core.gbapp/services/GBMinService.ts
index b7f8ec22..a74513c5 100644
--- a/packages/core.gbapp/services/GBMinService.ts
+++ b/packages/core.gbapp/services/GBMinService.ts
@@ -244,7 +244,7 @@ export class GBMinService {
     if (instance !== null) {
       const speechToken = instance.speechKey != null ? await this.getSTSToken(instance) : null;
       let theme = instance.theme;
-      if (theme !== undefined) {
+      if (theme === undefined) {
         theme = 'default.gbtheme';
       }
       res.send(
@@ -485,6 +485,10 @@ export class GBMinService {
 
   private async processMessageActivity(context, min: GBMinInstance, step: GBDialogStep) {
     // Direct script invoking by itent name.
+    const globalQuit = (locale, utterance) => {
+      return utterance.match(Messages[locale].global_quit);
+    }
+
 
     const isVMCall = Object.keys(min.scriptMap).find(key => min.scriptMap[key] === context.activity.text) !== undefined;
 
@@ -498,6 +502,9 @@ export class GBMinService {
     } else if (context.activity.text.charAt(0) === '/') {
       await step.beginDialog(context.activity.text);
 
+    } else if (globalQuit(step.context.activity.locale, context.activity.text)) {
+      await step.cancelAllDialogs();
+      await step.context.sendActivity(Messages[step.context.activity.locale].canceled);
     } else if (context.activity.text === 'admin') {
       await step.beginDialog('/admin');
 
diff --git a/packages/core.gbapp/strings.ts b/packages/core.gbapp/strings.ts
index 244d457b..49e91acc 100644
--- a/packages/core.gbapp/strings.ts
+++ b/packages/core.gbapp/strings.ts
@@ -6,8 +6,9 @@ export const Messages = {
     good_evening: 'good evening',
     good_night: 'good night',
     hi: (msg) => `Hello, ${msg}.`,
-    very_sorry_about_error: `I'm sorry to inform that there was an error which was recorded to be solved.`
-
+    very_sorry_about_error: `I'm sorry to inform that there was an error which was recorded to be solved.`,
+    global_quit: /^(quit|Quit)/i,
+    canceled: 'Canceled. If I can be useful, let me know how'
   },
   'pt-BR': {
     show_video: 'Vou te mostrar um vídeo. Por favor, aguarde...',
@@ -15,6 +16,8 @@ export const Messages = {
     good_evening: 'boa tarde',
     good_night: 'boa noite',
     hi: (msg) => `Oi, ${msg}.`,
-    very_sorry_about_error: `Lamento, ocorreu um erro que já foi registrado para ser tratado.`
+    very_sorry_about_error: `Lamento, ocorreu um erro que já foi registrado para ser tratado.`,
+    global_quit: /^(sair|Sair)/i, 
+    canceled: 'Cancelado, avise como posso ser útil novamente.'
   }
 };