You are not limited. Extend your imagination. Accept one for the reverse booking now. Thank the other for her kind bid and ask if you might have just a few more details and can you meet her in a couple of weeks, (when of course your wallet might be replenished!)
I have one reverse booking for an outcall online now. It turns out that a lady who I already know will be there who I reckon will have a no cost adventure with me so that will be fun. So I did not cancel the RB but will meet one or two of those who replied at other times, hopefully one of them this week.
The world is full of oysters!