Button Template without SDK or Web client channel

Hi, I am building a demo bot to give presentation to my Manager to show the suitability of the platform for our company. I want the Chatbot to display the buttons and display the selected button option to the user. I read the posts on the community and came across the Quick Replies Button Template. I copy-pasted that Javascript into the node ‘Script’. I then tried to test it in the platform’s chat bot but the buttons are not getting displayed. There is no error when I checked in the debug. Cannot I do this without adding any web client channel? If yes then please tell me the way to do that.

What channel would you expect the users to use for communicating with the bot?
The support for template depends on what the channel can offer as a interactive message by rendering on itself.