Meeting Scheduler (like Doodle Poll)

I’m looking for a plugin that would be similar to a Doodle Poll, if you know what I’m talking about. Basically I want to be able to have people click on a phone conference call page on my site and pick the dates and times that work best for a conference call. Then I want it to be able to automatically tell me which dates and times work the best without me having to manually count what works best. Hopefully this makes sense. If you have questions, let me know.