Try this
- Offer a small set of dates that actually fit your schedule and state any real deadline.
- Ask which options work for the other person. Keep a no-match result possible instead of continually adding options until someone reluctantly agrees.
A worked example
“Tuesday or Friday works for me. Could we choose by Monday?”
An invented example to adapt, not a real exchange or a script you have to follow.
Before you leave it here
Avoid an endless stream of options when a smaller set would make deciding easier.