Looking for a scheduling plugin

I’m looking for a plugin that I can set up specific times for phone interviews and have people select a time that works for them and then no one else can select that time. I tried finding something and a few that I found were just too complicated. Basically I want to specify times:
6:00-6:15 pm
6:15-6:30 pm
etc.

Then people select the one they want. Either the time disappears or is not clickable or something so that I don’t overlap appointments.

Any help would be appreciated.