[rahimnathwani]

"The AirBnB transaction has three parties"

That's incorrect. AirBnB provides a platform on which hosts can list their properties. There are two parties to that transaction.

In case you're talking about the subsequent 'rental' transaction, AirBnB is pretty clear that that's between the host and the guest. See section 5 of their ToS: https://www.airbnb.com/terms

[BurningFrog]

You seem to ask us to pretend those two transactions are unrelated, but I don't understand why.