bot message interruption

I created w bot with cdk infra, the problem I face is that even with this config allowinterrupt : false the user can interrupt the bot message. is there any specefic solution

                              "promptSpecification": {
                                **"allowInterrupt": false**,
                                "maxRetries": 2,
                                "messageGroups": [
                                  {
                                    "message": {
                                      "ssmlMessage": {
                                        "value": "<speak>hello my name is bot tell me how can i help you</speak>"
                                      }
                                    }
                                  }
                                ]
                              }