diff --git a/src/IGBConversationalService.ts b/src/IGBConversationalService.ts
index b2c8844..5ec781b 100644
--- a/src/IGBConversationalService.ts
+++ b/src/IGBConversationalService.ts
@@ -37,6 +37,10 @@ import { GBDialogStep } from "./GBDialogStep";
 
 export interface IGBConversationalService {
   sendEvent(step: GBDialogStep, name: string, value: Object);
+  sendEvent(step: GBDialogStep, name: string, value: Object);
+  sendFile(min: GBMinInstance, step: GBDialogStep, url: string);
+  sendAudio(min: GBMinInstance, step: GBDialogStep, url: string);
+  sendSms(min: GBMinInstance, mobile: string, text: string);
   routeNLP(step: GBDialogStep, min: GBMinInstance, text: string): Promise<boolean>;
   getCurrentLanguage(step: GBDialogStep);
 }