Thanks everyone who has taken time to respond to my question. I have accomplished this scenario by using MAIN.VIEW & MAIN CONTROLLER.
I main controller, I made the AJAX call and in RequestCompleted callback method, I have initialized views based on response from server. In this way, I still have one html but loading views based on condition from server.
Let me know if someone is interesting seeing my code, how I accomplished this. I am happy to share it.
Thanks again !! cheers. Kodo to UI5 team.