Hi there @T_Sidany,

Thanks for sharing on the Community. Great question.

It is definitely possible to do what you've described as part of a flow, you can start a flow and then create a conditional split with conditions like this (and set a specific amount of time to wait before checking for response/no response):

Note that the message body only checks for case sensitive exact matches, so you may want to include other variations of Yes (i.e. YES, yes, etc.)

For more information about custom keywords and creating flows based on an inbound message, check out this article.

Hope that helped!
Alex

Thank you @alex.hong for your time and anwser. 

Truly appreciated