using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Whetstone.Alexa;
. . .

namespace Whetstone.Alexa.EmailChecker.WebApi.Controllers
{
    [Produces("application/json")]
    [Route("api/alexa")]
    public class AlexaController : Controller
    {       
        [HttpPost]
        public async Task<ActionResult> ProcessAlexaRequest([FromBody] AlexaRequest request)
        {
           AlexaResponse resp = await _emailProcessor.ProcessEmailRequestAsync(request);
           return Ok(resp);
        }

using Amazon.Lambda.Core;
using Whetstone.Alexa
. . .

// Assembly attribute to enable the Lambda function's JSON input to be converted into a .NET class.
[assembly: LambdaSerializer(typeof(Amazon.Lambda.Serialization.Json.JsonSerializer))]

namespace Whetstone.Alexa.EmailChecker.Lambda
{
   public class Function
   {

       public async Task<AlexaResponse> FunctionHandlerAsync(AlexaRequest request, ILambdaContext context)
       {
           var emailProcessor = _serviceProvider.Value.GetRequiredService<IEmailProcessor>();
           return await emailProcessor.ProcessEmailRequestAsync(request);     
       }

RequestType reqType = request.Request.Type;

string intent = request.Request.Intent.Name;

string selectedCity = request.Request.Intent.GetSlotValue("city"); 

string textResp = "You are following a path in forest and have come to a fork. Would you like to go left or right?";
AlexaResponse resp = new AlexaResponse
{
    Version = "1.0",
    Response = new AlexaResponseAttributes
    {
        OutputSpeech = OutputSpeechBuilder.GetPlainTextSpeech(textResp),
        Card = CardBuilder.GetSimpleCardResponse("Fork in the Road", textResp),
        Reprompt = new RepromptAttributes
        {
            OutputSpeech = OutputSpeechBuilder.GetPlainTextSpeech("Left or right?"),
        },
        ShouldEndSession = false
    },
};

   . . .
        Card = CardBuilder.GetStandardCardResponse("Fork in the Road",
                textResponse,
                "https://dev-customapp.s3.amazonaws.com/adventuregame/images/forkintheroad_720x800.png",
                "https://dev-customapp.s3.amazonaws.com/adventuregame/images/forkintheroad_1200x800.png"
                ),
   . . .

    StringBuilder ssmlSample = new StringBuilder();

    ssmlSample.Append("<speak><audio src='https://dev-sbsstoryengine.s3.amazonaws.com/stories/animalfarmpi/audio/Act1-OpeningMusic-alexa.mp3'/> ");
    ssmlSample.Append("It was a dark and stormy night. <break time='500ms'/>");
    ssmlSample.Append("<say-as interpret-as='interjection'>no way!</say-as> ");
    ssmlSample.Append("I'm not doing this. That doesn’t make any sense!  That music didn’t sound dark and stormy at ");
    ssmlSample.Append("<prosody volume='x-loud' pitch='+10%'>all!</prosody>");
    ssmlSample.Append(" It sounds to me more like a bright and chipper morning! Should we go with dark and stormy, or bright and chipper?");
    ssmlSample.Append("</speak>")

    AlexaResponse resp = new AlexaResponse
    {
        Version = "1.0",
        Response = new AlexaResponseAttributes
        {
            OutputSpeech = OutputSpeechBuilder.GetSsmlSpeech(ssmlSample.ToString()),

using Whetstone.Alexa.Audio.AmazonSoundLibrary;

  . . .

    StringBuilder librarySample = new StringBuilder();
    librarySample.Append("<speak>");
    librarySample.Append(Office.ELEVATOR_BELL_1X_01);
    librarySample.Append("Your hotel is booked!");
    librarySample.Append("</speak>");