• Create custom prompts to validate input
  驗證格式的範例

bot.dialog('phonePrompt', [
    function (session, args) {
        if (args && args.reprompt) {
            builder.Prompts.text(session, "Enter the number using a format of either: '(555) 123-4567' or '555-123-4567' or '5551234567'")
        } else {
            builder.Prompts.text(session, "What's your phone number?");
        }
    },
    function (session, results) {
        var matched = results.response.match(/\d+/g);
        var number = matched ? matched.join('') : '';
        if (number.length == 10 || number.length == 11) {
            session.userData.phoneNumber = number; // Save the number.
            session.endDialogWithResult({ response: number });
        } else {
            // Repeat the dialog
            session.replaceDialog('phonePrompt', { reprompt: true });
        }
    }
]);

未輸入正確的格式，將會一直重問
{ reprompt: true } //表現session.replaceDialog也可以塞參數

• Repeat an action

var inMemoryStorage = new builder.MemoryBotStorage();

// This is a reservation bot that has a menu of offerings.
var bot = new builder.UniversalBot(connector, [
    function(session){
        session.send("Welcome to Contoso Hotel and Resort.");
        session.beginDialog("mainMenu");
    }
]).set('storage', inMemoryStorage); // Register in-memory storage 

// Display the main menu and start a new request depending on user input.
bot.dialog("mainMenu", [
    function(session){
        builder.Prompts.choice(session, "Main Menu:", menuItems);
    },
    function(session, results){
        if(results.response){
            session.beginDialog(menuItems[results.response.entity].item);
        }
    }
])
.triggerAction({
    // The user can request this at any time.
    // Once triggered, it clears the stack and prompts the main menu again.
    matches: /^main menu$/i,
    confirmPrompt: "This will cancel your request. Are you sure?"
});

可以隨時在子dialog stack 呼叫 main menu

var inMemoryStorage = new builder.MemoryBotStorage();

// This is a reservation bot that has a menu of offerings.
var bot = new builder.UniversalBot(connector, [
    function(session){
        session.send("Welcome to Contoso Hotel and Resort.");
        session.beginDialog("mainMenu");
    }
]).set('storage', inMemoryStorage); // Register in-memory storage 

// Display the main menu and start a new request depending on user input.
bot.dialog("mainMenu", [
    function(session){
        builder.Prompts.choice(session, "Main Menu:", menuItems);
    },
    function(session, results){
        if(results.response){
            session.beginDialog(menuItems[results.response.entity].item);
        }
    }
])
.triggerAction({
    // The user can request this at any time.
    // Once triggered, it clears the stack and prompts the main menu again.
    matches: /^main menu$/i,
    confirmPrompt: "This will cancel your request. Are you sure?"
});
// Main menu
var menuItems = { 
    "Order dinner": {
        item: "orderDinner"
    },
    "Dinner reservation": {
        item: "dinnerReservation"
    },
    "Schedule shuttle": {
        item: "scheduleShuttle"
    },
    "Request wake-up call": {
        item: "wakeupCall"
    },
}
// The dinner menu
var dinnerMenu = { 
    //...other menu items...,
    "Check out": {
        Description: "Check out",
        Price: 0 // Order total. Updated as items are added to order.
    },
    "Shit": {
        Description: "Food",
        Price: 100 // Order total. Updated as items are added to order.
    },
    "Pin": {
        Description: "Drink",
        Price: 10 // Order total. Updated as items are added to order.
    }
};
bot.dialog("addDinnerItem", [
    function(session, args){
        if(args && args.reprompt){
            session.send("What else would you like to have for dinner tonight?");
        }
        else{
            // New order
            // Using the conversationData to store the orders
            session.conversationData.orders = new Array();
            session.conversationData.orders.push({ 
                Description: "Check out",
                Price: 0
            })
        }
        builder.Prompts.choice(session, "Dinner menu:", dinnerMenu);
    },
    function(session, results){
        if(results.response){
            if(results.response.entity.match(/^check out$/i)){
                session.endDialog("Checking out...");
            }
            else {
                var order = dinnerMenu[results.response.entity];
                session.conversationData.orders[0].Price += order.Price; // Add to total.
                var msg = `You ordered: ${order.Description} for a total of $${order.Price}.`;
                session.send(msg);
                session.conversationData.orders.push(order);
                session.replaceDialog("addDinnerItem", { reprompt: true }); // Repeat dinner menu
            }
        }
    }
])
.reloadAction(
    "restartOrderDinner", "Ok. Let's start over.",
    {
        matches: /^start over$/i
    }
);

// Menu: "Order dinner"
// This dialog allows user to order dinner and have it delivered to their room.
bot.dialog('orderDinner', [
    function(session){
        session.send("Lets order some dinner!");
        session.beginDialog("addDinnerItem");
    },
    function (session, results) {
        if (results.response) {
            // Display itemize order with price total.
            for(var i = 1; i < session.conversationData.orders.length; i++){
                session.send(`You ordered: ${session.conversationData.orders[i].Description} for a total of $${session.conversationData.orders[i].Price}.`);
            }
            session.send(`Your total is: $${session.conversationData.orders[0].Price}`);

            // Continue with the check out process.
            builder.Prompts.text(session, "What is your room number?");
        } 
    },
    function(session, results){
        if(results.response){
            session.dialogData.room = results.response;
            var msg = `Thank you. Your order will be delivered to room #${results.response}`;
            session.send(msg);
            session.replaceDialog("mainMenu");
        }
    }
])

完整範例！
可以籍由操作　conversationData　來做所有的設定。