Retrieves the vehicle upsell for a specific rate request (RateUpsellInformation andRate).
A VehicleUpsellResponse containing the requestedRate and RateUpsellInformation.
This method returns you information about a possibly available Upsell-Offer for a previous requested rateRate.
One you have obtained a list ofRates, you will perhaps offer another, more comfortable, car for a slightly higher price. This offer is
CarRentalAgentService Class | SunnyCars.Services.Osi.WsReservation Namespace