Edit DialogueSystemSample.exe:

        public void HandleInput(DialogInputState input)
        {
            switch (this.currentState)
            {
            case DialoguePlayer.DialogueState.Stopped:
                break;
            case DialoguePlayer.DialogueState.PlayingBranch:
                if (this.DrawFaded)
                {
                    this.branchPlayer.SkipLines();
                    return;
                }
                this.DrawFaded = true;
                return;
            case DialoguePlayer.DialogueState.Hub:
                this.hubPlayer.HandleInput(input);
                if (this.Engine_IsCancelDown != null && this.Engine_IsCancelDown())
                {
                    this.currentState = DialoguePlayer.DialogueState.Stopped;
                    this.branchPlayer.speechLines.Clear();
                    return;
                }
                break;
            default:
                return;
            }
        }