using System;

public class Program

{

    public static void Main()

    {

        var request = new Test { ServiceType = "DDC/Hotel" };

        var serviceType = request.ServiceType switch

        {

            PetServiceTypeValues.DdcOrHotel => PetServiceType.DdcOrHotel,

            PetServiceTypeValues.Salon => PetServiceType.Salon,

            PetServiceTypeValues.Training => PetServiceType.Training,

            _ => PetServiceType.Unknown

        };

        Console.WriteLine(serviceType.ToString());

    }

    public class Test

    {

        public string ServiceType { get; set; } 

    }

    public enum PetServiceType

    {

        Unknown,

        DdcOrHotel,

        Salon,

        Training

    }

    public static class PetServiceTypeValues

    {

        public const string DdcOrHotel = "DDC/Hotel";

        public const string Salon = "Uff";

        public const string Training = "Training";

    }

}