Search data by another data type's fields

[dramirez]

I am setting up a booking system and I am creating a page where a user can see all their booking requests.

I have a table called Bookings with a field for the Listing Data type.

I am trying to set the data source for my repeating group as something like:
Search for Bookings: Listing’s Creator = Current User.

Can I do this without creating a field on the Booking called Listing’s Creator?

[measlystormnetworkuk]

Exactly the problem i am having with my one but with adverts.