My first basic ML reader/writer

Program.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Xml;

namespace Bootcamp_JeremyWells
{
    class Program
    {
        static void Main(string[] args)
        {
            
            // prompt for file input name
            Console.WriteLine("Enter the path to the XML file that you want to parse....");
            XmlDocument doc = new XmlDocument();
            doc.Load("sample.xml");

            // prompt for file output 
            //Console.WriteLine("Enter the name of the file that you want to save to....");
            //string outFile = Console.ReadLine();

            // write XML to console
            XmlNode root = doc.DocumentElement;

            // policy effective date
            XmlNode effectiveDate = root.SelectSingleNode("Transaction/PAPolicy/EffectiveDate");
            Console.WriteLine(effectiveDate.InnerText);

            // client email
            XmlNode clientEmail = root.SelectSingleNode("Transaction/Client/EmailAddress");
            Console.WriteLine(clientEmail.InnerText);

            // client phone is first phone number found from HomePhone WorkPhone or MobilePhone
            string clientPhone = string.Empty;
            string home = root.SelectSingleNode("Transaction/Client/HomePhone").InnerText;
            string work = root.SelectSingleNode("Transaction/Client/WorkPhone").InnerText;
            string mobile = root.SelectSingleNode("Transaction/Client/MobilePhone").InnerText;

            string[] phones = new string[] { home, work, mobile };

            foreach (var phone in phones)
            {
                if (!string.IsNullOrEmpty(phone))
                {
                    clientPhone = phone;
                    break;
                }
            }
            Console.WriteLine(clientPhone);

            // get list of any drivers
            XmlNode paPolicy = root.SelectSingleNode("Transaction/PAPolicy");
            XmlNodeList driverList = paPolicy.SelectNodes("PADriver");

            foreach (XmlNode driver in driverList)
            {
                // driver first name
                Console.WriteLine(driver.SelectSingleNode("DrvFirstName").InnerText);
                // driver last name
                Console.WriteLine(driver.SelectSingleNode("DrvLastName").InnerText);
                
            }

            // count drivers
            Console.WriteLine(driverList.Count);

            // average driver age
            Console.WriteLine(getAverageAge(driverList));

            // count vehicles
            XmlNodeList vehicleList = paPolicy.SelectNodes("PAVehicle");
            Console.WriteLine("number of vehicles: {0}", vehicleList.Count);



            // output data to the console  (you can use console.out)

            // write the data to a new xml file
            XmlTextWriter writer = new XmlTextWriter("myXml.xml", null);
            writer.Formatting = Formatting.Indented;
            writer.WriteStartElement("my title");
            writer.WriteElementString("title", book.InnerText);
            writer.WriteEndElement();
            writer.Close();
            
            private static int getAverageAge(XmlNodeList myList)
            {
                int age = 0;
                foreach (XmlNode driver in myList)
                {
                    DateTime birthday = Convert.ToDateTime(driver.SelectSingleNode("DOB").InnerText);
                    age += (DateTime.Now.Year - birthday.Year);
                }
                return age / myList.Count;
            }

        }
    }
}