You'd best look on the local board closest to your area.
You could put up an ISO (In Search Of) there.  If you are in a hurry, you may be disappointed unless you are prescreened.  
Happy Hobbying,
skb

I am in MDR but don't wait till late at night call.  Call early in the day so I can screen and then I will be happy to schedule a late night appointment fir you.

If you want to see a lady at the time of your post probably not, unless your listed on a dating ref service. Ladies need  time to screen you and they don't like calling your references late at night. If you're planning in advance, than wanting to see someone at 11 pm or later isn't a problem, if she doesn't mind working late. Many escorts have other lives besides this business, and prefer to work more regular hours. However, in LA you should be able to find someone. Good luck.