Still pending acceptance
If you haven’t heard from a mentor and really would like to specifically talk to them, definitely send a message in the session chat explaining WHY you selected them based on the information in their profile. They will then get an email notification which will help to bump the request.
If you want to cancel a session that has not been accepted by a mentor and is still in ‘requested’ mode you can do so after 48 hours by clicking into the session and hitting ‘cancel’.
Already accepted by mentor
If your requested as already been accepted and the mentor is anticipating it happening, please explain to them why you want to cancel it and THEN contact admin via live chat to have it removed from your queue.