A Real-estate agent is someone that sells houses, so the person that owns the car sells properties.
Booth have a few different definitions:
1: they are benchs (also know as banquets) used for seating in restaurants. (here's an example) http://www.kpetersen.com/speakeasybeadboard1.jpg
2: a booth could be a station or small unit where product is being sold, not an actual room but an area designated in a large room like a trade show. (another example) http://www.jama.ca/photos/auto2003/tokyo/i/canada_booth_1.jpg
Hope that helps.