C# Fundamentals - Restaurant Discount

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {
            int groupSize = int.Parse(Console.ReadLine());
            string package = Console.ReadLine();

            string hall = null;
            int priceHall = 0;

            if (groupSize <= 50)
            {
                hall = "Small Hall";
                priceHall = 2500;
            } else if (groupSize > 50 && groupSize <= 100)
            {
                hall = "Terrace";
                priceHall = 5000;
            } else if (groupSize > 100 && groupSize <= 120)
            {
                hall = "Great Hall";
                priceHall = 7500;
            }
            double discount = 0;
            int packagePrice = 0;
            if (package.Equals("Normal"))
            {
                discount = 0.05;
                packagePrice = 500;
            } else if (package.Equals("Gold"))
            {
                discount = 0.10;
                packagePrice = 750;
            } else if (package.Equals("Platinum"))
            {
                discount = 0.15;
                packagePrice = 1000;
            }
            if (groupSize >= 0 && groupSize <= 120)
            {
                int totalPrice = 0;
                totalPrice = priceHall + packagePrice;
                double total = totalPrice - (totalPrice * discount);
                double pricePerPerson = total / groupSize;

                Console.WriteLine("We can offer you the " + hall);
                Console.WriteLine($"The price per person is {pricePerPerson:F2}$");
            } else
            {
                Console.WriteLine("We do not have an appropriate hall.");
            }
         }
    }
}