How to return a random sentence in Twitch chat, using Streamer.bot?

Question

This is a simple functionality I have in my chatbot, but I want to customize it a little bit. Right now, when a user types !lurk, it returns one message. I want to add multiple other messages, and for it to pick a random one each time a user uses the command.

I would also like to have a separate list of sentences for when they come BACK from lurking. If you notice in the code, there's a second set where it displays a different message when the user uses the command a second time. It would also be nice if I could get it to un-lurk the user whenever they type ANYTHING in chat, instead of them having to use the command again.

Here's the code from inside the bot:

using System;

public class CPHInline
{
    public bool Execute()
    {
        int connectionID = 0;
        
        int count;
        int totalCount;
        string messageOut;
        string userName = args["user"].ToString();
        bool lurker = CPH.GetUserVar<bool>(userName, "lurker", true);
        count = CPH.GetGlobalVar<int>("lurkCount", true);
        totalCount = CPH.GetGlobalVar<int>("totalLurkCount", true);
        string inString = args["rawInput"].ToString();
        string[] outputer = inString.Split(' ');

        if(String.Equals(outputer[0].ToLower(), "")) {
            if(lurker == true) {
                count--;
                CPH.SetUserVar(userName, "lurker", false, true);
                messageOut = $"{userName} is no longer lurking! Current Lurkers are now: {count}.";
            } else if(lurker == false) {
                count++;
                totalCount++;
                CPH.SetUserVar(userName, "lurker", true, true);
                messageOut = $"{userName} is now lurking! Current Lurkers are now: {count}. We're now at {totalCount} all time lurkers!";
            } else {
                messageOut = "No Bueno";
            }
        } else if(String.Equals(outputer[0].ToLower(), "check")) {
            if(lurker) {
                messageOut = $"You are currently lurking! The current amount of lurkers: {count}. Total Lurkers: {totalCount}";
            } else if(!lurker) {
                messageOut = $"The current amount of lurkers: {count}. Total Lurkers: {totalCount}"; 
            } else {
                messageOut = "No Bueno";
            }
        } else if(String.Equals(outputer[0].ToLower(), "reset")) {
            count = 0;
            messageOut = $"The total amount of lurkers have been reset. New Count: {count}"; 
        } else {
            messageOut = "Incorrect usuage of the !lurk command";
        }

        CPH.SendMessage(messageOut);
        CPH.SetGlobalVar("totalLurkCount", totalCount, true);
        CPH.SetGlobalVar("lurkCount", count, true);
        return true;
    }
}```