Helper

helper. maybe useful:

https://docs.microsoft.com/en-us/bot-framework/rest-api/bot-framework-rest-state

By default, messages will not be persisted by the Microsoft Bot Framework. For stateful operations, you can use the Bot State API the following ways:

Set userData. The persisted data will be available to the same user across different conversations.
Set conversationData. The persisted data will be available to all the users within the same conversation.
Set privateConversationData. The persisted data will be available to the given user in the given conversation.
Set dialogData for storing temporary information in between the steps of a waterfall.
According to the documentation, conversationData is disabled by default. If you want to use it, you have to set persistConversationData to true.

tl;dr You have to take care of persistence for yourself. E.g

        public async Task StartAsync(IDialogContext context)
        {
            string defaultCity;

            if (!context.ConversationData.TryGetValue(ContextConstants.CityKey, out defaultCity))
            {
                defaultCity = "Seattle";
                context.ConversationData.SetValue(ContextConstants.CityKey, defaultCity);
            }

            await context.PostAsync($"Welcome to the Search City bot. I'm currently configured to search for things in {defaultCity}");
            context.Wait(this.MessageReceivedAsync);
        }
        
            if (!context.UserData.TryGetValue(ContextConstants.UserNameKey, out userName))
            {
                PromptDialog.Text(context, this.ResumeAfterPrompt, "Before get started, please tell me your name?");
                return;
            }
            
            
            
  private async Task ResumeAfterPrompt(IDialogContext context, IAwaitable<string> result)
        {
            try
            {
                var userName = await result;
                this.userWelcomed = true;

                await context.PostAsync($"Welcome {userName}! {HelpMessage}");

                context.UserData.SetValue(ContextConstants.UserNameKey, userName);
            }
            catch (TooManyAttemptsException)
            {
            }

            context.Wait(this.MessageReceivedAsync);
        }