I have added an adaptive card displaying list of meetings scheduled with the link to the meeting. I want the link in the list to be clickable. With Action.OpenUrl we can only get a button launches the given URL in an external web browser. But in my case, I have list of meetings with the link that needs to be clickable.
Adaptive Cards use a form of "Markdown" syntax (similar to here on stack overflow) and they include the ability to have a url, just with the markdown syntax. You can see here for more, including things like bold and italics. Basically, you encode your link like this [name for the link] (http://the.url.com), but notice I had a space between "]" and "(", which is just to show the text nicely here in the answer, otherwise stack overflow would show my sample as a link! It should actually be: link](http. See the link I sent for more though, if it's still not clear.