Error when following FormFlow tutorial
<p>I'm following the FormFlow tutorial at <a href="http://docs.botframework.com/sdkreference/csharp/forms.html#simpleSandwichBot" rel="nofollow">http://docs.botframework.com/sdkreference/csharp/forms.html#simpleSandwichBot</a>. Everything's going fine, until I attempt to add </p>

<pre><code>OnCompletionAsyncDelegate&lt;SandwichOrder&gt; processOrder = async (context, state) =&gt;
        {
            await context.PostAsync("We are currently processing your sandwich. We will message you the status.");
        };
</code></pre>

<p>I get the following error: CS1503: Argument 1: cannot convert from 'string' to 'Microsoft.Bot.Connector.Message.' </p>

<p>It seems I need to roll my own message, but the tutorial has not gone over rolling a new message inside a pending conversation. I fiddled around with the context and state objects, but neither seems to hold the appropriate methods.</p>

<p>I'll look into a solution and post back if I find one. I'm hoping Microsoft sees this and does another pass on their example app and maybe clear up a few typos while they're at it ("As described in th (sic) help").</p>