Hello,
I will be in town on business in a few weeks.  My schedule is somewhat hard to predict, so I have been trying to research providers in downtown sf that might be able to accomodate outcall with 2-3 hours advanced notice.  I am not looking for any specific type or service.
It is proving difficult to identify this, so I was wondering if anyone had any suggestions of agencies or independents who provide outcall to downtown that are ok with short notice (2-3 hours notice) requests.  

Feel free to pm me if you wish.  Thanks in sdvance

Nobody girl wants you to waste their time.

 If some girls interests you, I'd highly recommend you find out if she has a reference system.  Cuz if you want to see her then you will at least need to be pre-approved.  Very few women live in the City proper, so unless they are sitting around waiting for your call, you are going to be alone that night.