using VkNet.FluentCommands.UserBot;

//...

FluentUserBotCommands commands = new FluentUserBotCommands();
await commands.InitBotAsync("login", "very hard password");

commands.OnText("^ping$", "pong");
commands.OnText("^hello$", new[] {"hi!", "hey!", "good day!"});
commands.OnText("command not found");

commands.OnException((e, token) =>
{
    Console.WriteLine("Wake up, everything is broken");
    Console.WriteLine($"[{DateTime.UtcNow}] {e.Message} {Environment.NewLine} {e.StackTrace}");
    return Task.CompletedTask;
});

await commands.ReceiveMessageAsync();