Skype机器人。定时消息。不需要用户输入

Question

所以我最近一直试图制作一个试图从网站上检索数据的skype机器人。然后每15分钟左右将其脱口而出，我不需要用户输入。不幸的是，由于微软缺乏关于机器人框架的文档，我似乎无法做到这一点。

using System;
using System.Threading.Tasks;
using System.Web.Http;

using Microsoft.Bot.Connector;
using Microsoft.Bot.Builder.Dialogs;
using System.Web.Http.Description;
using System.Net.Http;
using System.Diagnostics;

namespace Microsoft.Bot.Sample.SimpleEchoBot
{
[Serializable]
public class EchoDialog : IDialog<object>
{
    public async Task StartAsync(IDialogContext context)
    {
        context.Wait(MessageReceivedAsync);
    }

    public async Task MessageReceivedAsync(IDialogContext context, IAwaitable<IMessageActivity> argument)
    {
        var message = await argument;
        await context.PostAsync("You said: " + message.Text);
        context.Wait(MessageReceivedAsync);
    }
}

[BotAuthentication]
public class MessagesController : ApiController
{
    /// <summary>
    /// POST: api/Messages
    /// receive a message from a user and send replies
    /// </summary>
    /// <param name="activity"></param>
    [ResponseType(typeof(void))]
    public virtual async Task<HttpResponseMessage> Post([FromBody] Activity activity)
    {
        // check if activity is of type message
        if (activity != null && activity.GetActivityType() == ActivityTypes.Message)
        {
            await Conversation.SendAsync(activity, () => new EchoDialog());
        }
        else
        {
            HandleSystemMessage(activity);
        }
        return new HttpResponseMessage(System.Net.HttpStatusCode.Accepted);
    }

    private Activity HandleSystemMessage(Activity message)
    {
        if (message.Type == ActivityTypes.DeleteUserData)
        {
            // Implement user deletion here
            // If we handle user deletion, return a real message
        }
        else if (message.Type == ActivityTypes.ConversationUpdate)
        {
            // Handle conversation state changes, like members being added and removed
            // Use Activity.MembersAdded and Activity.MembersRemoved and Activity.Action for info
            // Not available in all channels
        }
        else if (message.Type == ActivityTypes.ContactRelationUpdate)
        {
            // Handle add/remove from contact lists
            // Activity.From + Activity.Action represent what happened
        }
        else if (message.Type == ActivityTypes.Typing)
        {
            // Handle knowing tha the user is typing
        }
        else if (message.Type == ActivityTypes.Ping)
        {
        }

        return null;
    }
}
}

以下是Microsoft Open source Echobot供参考。如何在不需要用户输入的情况下每隔15分钟编辑一次定时消息？