private async Task <DialogTurnResult> BusInfoStepAsync(WaterfallStepContext stepContext, CancellationToken cancellationToken)
{
busDetail.StationName = busDetail.StationName == null?stepContext.Context.Activity.Text : stepContext.Result.ToString();
(string arrmsg1, string arrmsg2) = await BusInformation.GetBusArrTimeAsync(busDetail.RouteNum, busDetail.StationName);
CardGenerator cardGenerator = new CardGenerator();
await cardGenerator.AttachBusCardAsync(stepContext.Context, busDetail, arrmsg1, arrmsg2, cancellationToken);
return(await stepContext.EndDialogAsync(null, cancellationToken));
}
