/// <summary>
        /// Books skype meeting
        /// </summary>
        /// <param name="appointment">Appointment object</param>
        public static void BookApointment(Appointment appointment)
        {
            // "chk_10_2016_10_24_03:00 ;" Sample date format expected in healthportal Api;
            var timeSlot = "chk_" + appointment.Id + "_" + appointment.Date.ToString("yyyy_MM_dd_HH:mm ;");

            BotService.BookMeeting(appointment.EmailId, timeSlot, appointment.PatientName, "None", "Virtual Doctor");
        }