diff --git a/libraries/botbuilder-dialogs/src/dialogHelper.ts b/libraries/botbuilder-dialogs/src/dialogHelper.ts
index e344fe46a7..474aac2f9a 100644
--- a/libraries/botbuilder-dialogs/src/dialogHelper.ts
+++ b/libraries/botbuilder-dialogs/src/dialogHelper.ts
@@ -6,6 +6,22 @@ import { DialogSet } from './dialogSet';
 import { isSkillClaim } from './prompts/skillsHelpers';
 
 export async function runDialog(dialog: Dialog, context: TurnContext, accessor: StatePropertyAccessor<DialogState>): Promise<void> {
+    if (!dialog) {
+        throw new Error('runDialog(): missing dialog');
+    }
+
+    if (!context) {
+        throw new Error('runDialog(): missing context');
+    }
+
+    if (!context.activity) {
+        throw new Error('runDialog(): missing context.activity');
+    }
+
+    if (!accessor) {
+        throw new Error('runDialog(): missing accessor');
+    }
+
     const dialogSet = new DialogSet(accessor);
     dialogSet.telemetryClient = dialog.telemetryClient;
     dialogSet.add(dialog);
@@ -16,11 +32,11 @@ export async function runDialog(dialog: Dialog, context: TurnContext, accessor:
     const identity = context.turnState.get(context.adapter.BotIdentityKey);
     if (identity && isSkillClaim(identity.claims)) {
         // The bot is running as a skill.
-        if (context.activity.type === ActivityTypes.EndOfConversation && dialogContext.stack.length > 0) {
+        if (context.activity.type === ActivityTypes.EndOfConversation && dialogContext.stack.length > 0 &&  isEocComingFromParent(context)) {
             // Handle remote cancellation request if we have something in the stack.
             const activeDialogContext = getActiveDialogContext(dialogContext);
             
-            const remoteCancelText = 'Skill was canceled by a request from the host.';
+            const remoteCancelText = 'Skill was canceled through an EndOfConversation activity from the parent.';
             await context.sendTraceActivity(telemetryEventName, undefined, undefined, `${ remoteCancelText }`);
 
             // Send cancellation message to the top dialog in the stack to ensure all the parents are canceled in the right order. 
@@ -68,3 +84,12 @@ function getActiveDialogContext(dialogContext: DialogContext): DialogContext {
 
     return getActiveDialogContext(child);
 }
+
+// We should only cancel the current dialog stack if the EoC activity is coming from a parent (a root bot or another skill).
+// When the EoC is coming back from a child, we should just process that EoC normally through the 
+// dialog stack and let the child dialogs handle that.
+function isEocComingFromParent(context: TurnContext): boolean {
+    // To determine the direction we check callerId property which is set to the parent bot
+    // by the BotFrameworkHttpClient on outgoing requests.
+    return !(!!context.activity.callerId);
+}
diff --git a/libraries/botbuilder-dialogs/tests/dialogHelper.test.js b/libraries/botbuilder-dialogs/tests/dialogHelper.test.js
new file mode 100644
index 0000000000..05531b60f5
--- /dev/null
+++ b/libraries/botbuilder-dialogs/tests/dialogHelper.test.js
@@ -0,0 +1,40 @@
+const { strictEqual } = require('assert');
+const { runDialog } = require('../');
+
+describe('runDialog()', function() {
+    this.timeout(300);
+
+    describe('parameter validation', () => {
+        it('should throw if missing dialog parameter', (done) => {
+            runDialog().then(
+                () => done(new Error('should have throw error')),
+                (err) => {
+                    done(strictEqual(err.message, 'runDialog(): missing dialog'));
+                });
+        });
+
+        it('should throw if missing context parameter', (done) => {
+            runDialog({}).then(
+                () => done(new Error('should have throw error')),
+                (err) => {
+                    done(strictEqual(err.message, 'runDialog(): missing context'));
+                });
+        });
+
+        it('should throw if missing context.activity', (done) => {
+            runDialog({}, {}).then(
+                () => done(new Error('should have throw error')),
+                (err) => {
+                    done(strictEqual(err.message, 'runDialog(): missing context.activity'));
+                });
+        });
+
+        it('should throw if missing accessor parameter', (done) => {
+            runDialog({}, { activity: {} }).then(
+                () => done(new Error('should have throw error')),
+                (err) => {
+                    done(strictEqual(err.message, 'runDialog(): missing accessor'));
+                });
+        });
+    });
+});
diff --git a/libraries/botbuilder/src/botFrameworkHttpClient.ts b/libraries/botbuilder/src/botFrameworkHttpClient.ts
index 1cc46248ee..f19127927c 100644
--- a/libraries/botbuilder/src/botFrameworkHttpClient.ts
+++ b/libraries/botbuilder/src/botFrameworkHttpClient.ts
@@ -90,7 +90,7 @@ export class BotFrameworkHttpClient extends BotFrameworkClient {
             };
             activity.conversation.id = conversationId;
             activity.serviceUrl = serviceUrl;
-            activity.callerId = fromBotId;
+            activity.callerId = `urn:botframework:aadappid:${ fromBotId }`;
             const config = {
                 headers: {
                     Accept: 'application/json',