Phone Numbers

using System;
using System.Text;
using System.Text.RegularExpressions;

public class PhoneNumbers
{
    public static void Main()
    {
        StringBuilder sb = new StringBuilder();

        while (true)
        {
            string input = Console.ReadLine();

            if (input == "END")
            {
                break;
            }

            sb.Append(input);
        }

        const string pattern = @"(?<name>[A-Z][a-zA-Z]*)[^a-zA-Z+]*?(?<phone>\+?[0-9][0-9.() \-\/]*[0-9])";

        Regex regex = new Regex(pattern);

        var matches = regex.Matches(sb.ToString());

        if (matches.Count == 0)
        {
            Console.WriteLine("<p>No matches!</p>");
            return;
        }

        Console.Write("<ol>");
        foreach (Match match in matches)
        {
            string phone = Regex.Replace(match.Groups["phone"].Value, @"[^+0-9]+", string.Empty);

            Console.Write(
                "<li><b>{0}:</b> {1}</li>",
                match.Groups["name"],
                phone);
        }

        Console.Write("</ol>");
    }
}