`Yes, and...`, `Yes, but...`

Seeking the missing middle between these:

Would you like to proceed?

1. Yes
2. No, keep planning

Currently, it seems about half of my 2 responses begin with the words yes and or yes but. The semantics are jarring for me, and probably can't be helping the models either.

"I've sent a proposal the the user"...
"The proposal was rejected with message: 'do the proposal, with caveats'"

vs

"I've sent a proposal the the user"...
"The proposal was accepted with caveats:"