How was someone able to see who's staying at my place

[Annas0]

I just received the below request, how was she able to see who was staying on that date?

Hi Annas,
The dates are actually for an existing booking that you have with Dan Kennedy starting tomorrow. Can you please tell me if you have a crib available?
Thanks

Jennifer

[David-and-Fiona0]

They certainly shouldnt be able to. I would message Airbnb. 

[Annas0]

Yeh I have, Dan lives in Sydney and this lady is coming from London. I asked her how she knew about Dan and she hasn't replied. Only way is if she actually does know him. 

[Clare0]

@Annas0 Maybe Jennifer knows Dan and knows he made a reservation with you.