Nikulden Meals

using System;
using System.Collections.Generic;
using System.Linq;

namespace nikuldenMeals
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<string, List<string>> likedMeals = new Dictionary<string, List<string>>();
            int unlikedMeals = 0;
            string input = Console.ReadLine();
            while (input != "Stop")
            {
                string[] cmdArg = input.Split("-");
                string command = cmdArg[0];
                string guestName = cmdArg[1];
                string meal = cmdArg[2];
                bool existingGuest = CheckForGuest(likedMeals, guestName);
                bool existingMeal = false;
                switch (command)
                {
                    case "Like":
                        if (!existingGuest)
                        {
                            likedMeals.Add(guestName, new List<string>());
                            likedMeals[guestName].Add(meal);
                        }
                        else
                        {
                            existingMeal = CheckForMeal(likedMeals, guestName, meal);
                            if (!existingMeal)
                            {
                                likedMeals[guestName].Add(meal);
                            }
                        }
                        break;
                    case "Unlike":
                        if (!existingGuest)
                        {
                            Console.WriteLine($"{guestName} is not at the party.");
                        }
                        else
                        {
                            existingMeal = CheckForMeal(likedMeals, guestName, meal);
                            if (existingMeal)
                            {
                                unlikedMeals++;
                                likedMeals[guestName].Remove(meal);
                                Console.WriteLine($"{guestName} doesn't like the {meal}.");
                            }
                            else
                            {
                                Console.WriteLine($"{guestName} doesn't have the {meal} in his/her collection.");
                            }
                        }
                        break;
                }
                input = Console.ReadLine();
            }
            likedMeals = likedMeals
                .OrderByDescending(x => x.Value.Count())
                .ThenBy(x => x.Key)
                .ToDictionary(a => a.Key, b => b.Value);
            foreach (var guest in likedMeals)
            {
                Console.WriteLine($"{guest.Key}: {string.Join(", ", guest.Value)}");
            }
            Console.WriteLine($"Unliked meals: {unlikedMeals}");
        }

        static bool CheckForMeal(Dictionary<string, List<string>> likedMeals, string name, string meal)
        {
            if (likedMeals[name].Contains(meal))
            {
                return true;
            }
            return false;
        }

        static bool CheckForGuest(Dictionary<string, List<string>> likedMeals, string guestName)
        {
            if (likedMeals.ContainsKey(guestName))
            {
                return true;
            }
            return false;
        }
    }
}