use a timeout

lib/tasks/gather.js

@@ -108,7 +108,9 @@ class TaskGather extends Task {
             if (this.listenAfterSpeech) {
               startListening(cs, ep);
             } else {
-              this.notifyTaskDone();
+              setTimeout(()=> {
+                this.notifyTaskDone();
+              }, 2000);
             }
           }
         });