/// <summary>
 /// Calls the CLIHelper method to get a date range.
 /// </summary>
 /// <returns></returns>
 private Tuple <DateTime, DateTime> GetDateRange()
 {
     return(CLIHelper.GetFutureDateRange(
                "What is the arrival date? (MM/DD/YYYY): ",
                "What is the departure date? (MM/DD/YYYY): ",
                "Departure date must be at least one day after arrival date.",
                true,
                "1234",
                "Post-dated reservations require administrative access.",
                "Please enter password to continue (0 to quit) (hint: 1234): "));
 }