EWS_FindAppointments.cs

using Microsoft.Exchange.WebServices.Data;
using System;

namespace EWS_FindAppointments
{
    class Program
    {
        static void Main(string[] args)
        {
            var service = new ExchangeService(ExchangeVersion.Exchange2010_SP2);
            service.Url = new Uri("https://<exchangeServer>/ews/exchange.asmx");
            service.Credentials = new WebCredentials(@"<username>", "<password>");

            var folderId = new FolderId(WellKnownFolderName.Calendar, new Mailbox("<meetingroom>"));
            var calendar = CalendarFolder.Bind(service, folderId, new PropertySet());

            var calendarView = new CalendarView(DateTime.Today, DateTime.Today.AddDays(3).AddTicks(-1), 10);

            calendarView.PropertySet = new PropertySet(AppointmentSchema.Subject, AppointmentSchema.Start, AppointmentSchema.End);

            var appointments = calendar.FindAppointments(calendarView);

            foreach (Appointment a in appointments)
            {
                Console.Write("Subject: " + a.Subject.ToString() + " ");
                Console.Write("Start: " + a.Start.ToString() + " ");
                Console.Write("End: " + a.End.ToString());
                Console.WriteLine();
            }
            Console.ReadKey();
        }
    }
}