C# Age and Naming system with age grouping features

first_name = Console.ReadLine();
second_name = Console.ReadLine();
age = Console.ReadLine();
Console.WriteLine("Please enter your first, and second name - and also your age.");
Console.WriteLine("You are called:");
Console.WriteLine(first_name);
Console.WriteLine(second_name);
Console.WriteLine("And you are...");
if (13 > age)
    Console.WriteLine("You are a kid.");
if (20 > age)
    Console.WriteLine("You are a teen.");
if (22 < age)
    Console.WriteLine("You are an adult.");