Short answer: Probably.
Unfortunately, I don't have the Airmail app (Airmail 3?), and there is very little scripting info about Airmail on the 'net. So, based on the scripting dictionary (SDEF) for Apple Mail, I have put together this script which you can test in Script Editor.
Select the message in your Airmail inbox that you want to reply to, and run this script.
tell application "Airmail 3"
set msgList to selection
set oMsg to item 1 of msgList
tell oMsg
--- sender property should be in this format ---
-- "Sender Name <name@domain.tld>"
set senderStr to sender
--- Separate sender into Sender Name and Address ---
set AppleScript's text item delimiters to {" <", ">"}
set oSender to text items of senderStr
set senderName to item 1 of oSender
set senderAddr to item 2 of oSender
end tell
end tell
return senderName
Post the results of your test back here, and we'll go from there. If you actually get the sender's name, the rest of what you want is fairly easy.
I did find one other KM forum topic about Airmail that could be helpful:
Insert subject line from message selected/opened in AirMail 3
Maybe @CafeTran_Training, or other Airmail user, can jump in here with a better answer.
BTW, if you'd like to take advantage of scripting, I highly recommend Script Debugger 7.
SD7 now comes with a 20-day free trial, and then will gracefully downgrade to free SD7 Lite (which is still much better than Script Editor).