Azure Function returning word pairs

ADFSSRS.csx

using System.Net;

public static async Task<HttpResponseMessage> Run(HttpRequestMessage req, TraceWriter log)
{
    log.Info($"C# HTTP trigger function processed a request. RequestUri={req.RequestUri}");
    
    var responseMsg = String.Empty;
    Random r = new Random();
    int rInt = r.Next(0,4);
    responseMsg = GetQuote(rInt);

    return req.CreateResponse(HttpStatusCode.OK, responseMsg);
}

public static string GetQuote(int i)
{
    switch (i)
    {
        case 0:
        return "Rum,Coke";

        case 1:
        return "Gin,Tonic";

        case 2:
        return "Vodka,OJ";

        case 3:
        return "Martini,Olives";

        case 4:
        return "Tequila,Blackout";

        default:
        return "Hello,World";
    }
}