Currently Flow can only post a new Teams message, but what if we want to reply and keep a single thread for a particular topic from the same Flow (or maybe another Flow) This cannot be done currently.
Definitely a must!
Same idea shared here: https://powerusers.microsoft.com/t5/Flow-Ideas/Add-action-to-reply-to-Microsoft-Teams-channel-messag...
Unless I'm missing something, I think this is now possible. See v-bacao-msft's solution here:https://powerusers.microsoft.com/t5/Building-Flows/Dynamic-content-not-supprted-for-Microsoft-Teams-...
Yes this is now possible!
Unfortunately at this time it is not possible to reply as the Flow bot unless I'm missing something.
Reponding to a message as a bot would have great value.