using System;

public class Program

{

    public static void Main()

    {

        string message = "<message>";

        string data = "<ADV>[RW Cruises] Exciting news! We have a new booking website. Enjoy early access to book your FREE cruise on Genting Dream for CNY2024. Book now at www.rwcruises.com/gr with promo code GDRALL22BECV6S. For invited members only, first-come first-served. T&C apply. EN/UN member.booking@rwcruises.com";

        int startIndex = message.IndexOf("<");

        int num = message.IndexOf(">");

          if (num == -1 && startIndex == -1)

            throw new FormatException("Invalid Parameter");

          string oldValue = message.Substring(startIndex, num - startIndex + 1);

          message = message.Replace(oldValue, data.Trim());

        Console.WriteLine(message);

    }

}