using (var service = new TransfersService.TransfersServiceContractClient()) {

    // Search for all source locations.
    var sourceLocations = service.SearchForSourceLocations("");

    // Search for all source locations that contain the word "Glas".
    var sourceLocations = service.SearchForSourceLocations("Glas");
}

using (var service = new TransfersService.TransfersServiceContractClient()) {

    // Search for locations that have routes from Leeds/Bradford Airport.
    var targetLocations = service.SearchForTargetLocations("LBA", "");

    // Search for locations that have routes Glasgow City Centre and contain the word "bay".
    var targetLocations = service.SearchForTargetLocations("31443721", "bay");
}

using (var service = new TransfersService.TransfersServiceContractClient()) {

    // Construct the search itinerary.
    var searchItinerary = new TransferServiceSearchItineraryDTO() {
        SourceLocationCode = "CDG",
        TargetLocationCode = "50875030",
        OutboundDate = outboundDate,
        Adults = 1,
        Children = 0,
        Infants = 0,
        CurrencyCode = "EUR",
        LanguageCode = "en"
    };

    // Perform the service availability search.
    var search = service.SearchForServices(searchItinerary);

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var selectedTransferService = SelectService(search);

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var selectedJourney = SelectOutboundJourney(selectedTransferService);
}

using (var service = new TransfersService.TransfersServiceContractClient()) {

    // Construct the search itinerary.
    var searchItinerary = new TransferServiceSearchItineraryDTO() {
        SourceLocationCode = "CDG",
        TargetLocationCode = "50875030",
        OutboundDate = outboundDate,
        ReturnDate = returnDate,
        Adults = 1,
        Children = 0,
        Infants = 0,
        CurrencyCode = "EUR",
        LanguageCode = "en"
    };

    // Perform the service availability search.
    var search = service.SearchForServices(searchItinerary);

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var selectedTransferService = SelectService(search);
    var outboundJourney = SelectOutboundJourney(selectedTransferService);
    var returnJourney;

    if (selectedTransferService.RequiresTwoStepReturnSelectionProcess) {
        returnJourney = PerformTwoStepProcess(/* ... */);
    } else {

        // When we don't use 2-step process we reuse the outbound journey as it does not require the additional step to be considered populated.
        returnJourney = outboundJourney
    }
}

using (var service = new TransfersService.TransfersServiceContractClient()) {

    // Construct the search itinerary.
    var searchItinerary = new TransferServiceSearchItineraryDTO() {
        SourceLocationCode = "CDG",
        TargetLocationCode = "50875030",
        OutboundDate = outboundDate,
        ReturnDate = returnDate,
        Adults = 1,
        Children = 0,
        Infants = 0,
        CurrencyCode = "EUR",
        LanguageCode = "en"
    };

    // Perform the service availability search.
    var outboundSearch = service.SearchForServices(searchItinerary);

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var selectedTransferService = SelectService(outboundSearch);

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var outboundJourney = SelectOutboundJourney(selectedTransferService);

    // 2-step process: assumes prior check for (selectedTransferService.RequiresTwoStepReturnSelectionProcess == true)
    var returnSearch = service.SearchForReturnServices(outboundSearch.SearchToken, outboundJourney.JourneyToken);

    // The return search will only contain 1 service, the service that the outbound journey was associated with.
    var selectedReturnTransferService = returnSearch.Services.FirstOrDefault();

    if (selectedReturnTransferService == null) {
        // ERROR: No return journeys available for the given search criteria.
    }

    // Either automate selection of a service and journey, or provide the initial results for customer's to select.
    var returnJourneys = SelectReturnJourney(returnSearch);
}

using (var api = new TransfersService.TransfersServiceContractClient()) {
    var quotation = api.GenerateQuotation(search.SearchToken, outboundJourney.JorneyToken, null);
}

using (var api = new TransfersService.TransfersServiceContractClient()) {
    var quotation = api.GenerateQuotation(search.SearchToken, outboundJourney.JorneyToken, returnJourney.JourneyToken);
}

using (var transfersApi = new TransfersService.TransfersServiceContractClient()) {

    var quotation = GetQuotationAsPerPreviousSteps();

    var bookingItinerary = new TransferBookingItineraryDTO() {
        Quotation = quotation,
        LeadPassengerDetails = new PassengerDetailsDTO() {
            FirstNames = "T",
            LastName = "Test",
            EmailAddress = "examples@travelparkinggroup.com",
            ContactNumber = "01234567980"
        },
        PaymentMethodDetails = new PaymentMethodDetailsDTO() {
            Card = new CardDTO() {
                CardHolderName = "Mr T TEST",
                CardNumber = "4263971921001307",
                ExpiryMonth = 06,
                ExpiryYear = 2016,
                SecurityNumber = "123"
            }
        }
    };

    var booking = transfersApi.PlaceBooking(bookingItinerary);
}