private async Task FillAnOrder(ConversationFlow flow, OrderInfo profile, ITurnContext <IMessageActivity> turnContext) { string input = turnContext.Activity.Text?.Trim(); string message; switch (flow.LastQuestionAsked) { case ConversationFlow.Question.None: await turnContext.SendActivityAsync("Let's get started. What is your name?"); flow.LastQuestionAsked = ConversationFlow.Question.Name; break; case ConversationFlow.Question.Name: if (OrderValidation.ValidateName(input, out string name, out message)) { profile.Name = name; await turnContext.SendActivityAsync($"Hi {profile.Name}."); await turnContext.SendActivityAsync("How old are you?"); flow.LastQuestionAsked = ConversationFlow.Question.Age; break; } else { await turnContext.SendActivityAsync(message ?? "I'm sorry, I didn't understand that."); break; }