I think I have the same question. "Quick Response" is not like Auto Reply. It is messages that are used frequently so the user can select the pre-typed messages. Examples may be "On my way", "In traffic", "In a meeting", "I cannot talk right now. I'll call back in a little while.", etc. The user can determine which messages they want, and quickly select from a list for their particular situation. It's a handy feature that is lost with Message+