Will not accepting an accidental booking negatively affect me?

I have a client who made a booking request for Nov 10. I did a meet & greet with her on Nov 5, and she told me she just wanted to do a general M&G to make sure I'd be a good fit for the future, but she doesn't actually need me on Nov 10 and couldn't figure out how to request a M&G without booking. The booking request is still there, and I'm not sure if it'll eventually expire and/or if I need to do anything about it. If I just leave it, will it somehow negatively affect my score? I just saw my booking rate and score both went down.