This is our 1st VAD project. The project is about auto call service agent by retrieving data from database. We using VAD to allow customer to insert their contact number which latter be called automatically by system through our customize software that we had already prepared. I have 2 small issue which I stuck with : 1) When I confirm customer contact number by using TTS , now after that I want to ask them # to cancel or * to continue . If customer press * , number input by customer will be saved in database. but if customer press # then it again go back to user input menu. How I can do above process, what should I use loop or conditional component. 2) How I can add thai prompt i.e Thai TTS. Please see the attached application diagram.