How to : Get Alert Dialog Click Option - As Input to Conditional Action

I need to get user input from Alert dialog & perform conditional action based on the which option user taps on.

For ex:

In the below alert :

1. Cancel - If user clicks on this, then I want nothing to happen (presently it still launches the Update Payment details page) , since I dont know how to tie "Cancel" choice with a Conditional Action

2. Update Payment Details - Should launch a URL which it is currently doing

Basically , how do

1. I take user input from Alert

2. Store it in a Page State

3. Conditional Action - Perform Conditional Action based on Page State in point 2