Enable subject line to be editable
Dennis (KREIGHT) commented
How about this...
Do a separate mail reply for the FindTime request and change that mail subject line.
If you don't combine a thread reply with a FindTime request you will be able to keep the subjects to your liking.
Peter Kirchner commented
Often from a mail conversation the need appears to organize a meeting. In this case the title of the meeting should be different to the one from the mail conversation.