RestaurantApp/Client.cs

using System;

namespace RestaurantApp.Models
{
    public class Client
    {
        public int ClientId { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }
        public string Phone { get; set; }
        public string Email { get; set; }
        public DateTime? BirthDate { get; set; }
        public int BonusPoints { get; set; }
        public DateTime RegisteredAt { get; set; }

        public string FullName => $"{LastName} {FirstName}";
    }
}