Introducing Microsoft Bot Framework and LUIS (Azure Cognitive Service) for building intelligent Chatbots.

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Welcome to the
Tel-Aviv

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Moaid Hathot
Software Consultant
@MoaidHathot
moaidh@codevalue.net
http://www.moaid.codes
www.codevalue.net
Chatbots – CMD for Humans

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• Software engineer, consultant and code Jedi
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@MoaidHathot
moaidh@codevalue.net
http://www.moaid.codes
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12. Agenda
Microsoft Bot Framework
Messages
Dialogs
Forms
State
Microsoft Cognitive Services
Language Understanding (LUIS)
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Chatbots
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14. Introduction to Chat Bots
Natural Language User Interface (NLUI)
Another form of UX/UI
The Hardest part is designing the conversation flow
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15. Introduction to Chat Bots
A bot consist of several parts
Managing Conversational flow
Understanding user intent
State persistency
Connect to channels (Skype, Slack, Teams, Messager, etc…)

16. Introduction to Chat Bots
A bot consist of several parts
Managing Conversational flow
Understanding user intent
State persistency
Connect to channels (Skype, Slack, Teams, Messager, etc…)
All of the above can be done using:
Microsoft’s BotBuilder SDK
Azure Cognitive Services

17. Introduction to Chat Bots
A bot consist of several parts
Managing Conversational flow
Understanding user intent
State persistency
Connect to channels (Skype, Slack, Teams, Messager, etc…)
All of the above can be done using:
Microsoft’s BotBuilder SDK
Azure Cognitive Services
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18. Bot Framework
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19. Bot Framework Architecture
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20. Bot Framework
Key Concepts
Connector – A single REST API for communicating across multiple channels
Activity – A message for passing information between bot and user.
MessageActivity – passing messages
DeleteUserData
ConversationUpdate – member being added/removed
ContactRelationUpate – Bot being added/removed from a user Contact List
Typing – The user is typing.
Dialog – A dialog for a bot is like a screen for a Desktop app.
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21. Bot Framework Emulator
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DemoMessages

23. Dialogs
Dialogs
Stacked – BotBuilder SDK maintain and serialize dialogs as a stack.
Code continuations allow modeling a state machine.
Can be chained in a Linq-like API.
Can be generated with FormFlow and FormBuilder.
Various Prompts are available as dialogs.
Dialogs can be interrupted by Global message handlers using Scorables
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Root Dialog
Help Dialog Order Dialog

24. Conversation Flow
The active dialog takes control of conversation flow
Using the SDK you can:
IDialogStack.Wait() – Suspect the current dialog until an event has been sent to the bot.
IDialogStack.Done() – Complete the current dialog and return a result to the parent dialog.
IDialogStack.Forward() – Call a child dialog, add it to the top of the stack and forward the
message.
IDialogStack.Call() – Call a child dialog and add it to the top of the stack
IDialogStack.Fail() – Fail the current dialog and return an exception to the parent dialog.
IDialogStack.Reset() – Resets the Stack.
IDialogStack.Post() – Post an event to the queue.
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DemoDialogs

26. Bot State
Multiple level of State
User Data
Conversation specific data
Conversation specific data for specific user
Dialog data
Persisted and managed by the Bot Framework State Service
IBotStorage
In-memory data storage is available for testing and prototyping.
Custom Data Storage can be created. For example for
CosmoDB
Table Storage
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DemoBot State

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LUIS
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29. LUIS
LUIS – Language Understanding Intelligent Service
Understand what a user wants in their own words.
Based on machine learning algorithms
Allows you to ‘train’ it under a few minutes according to your domain.
Key LUIS concepts
Intent – represents actions the user wants to perform.
Utterances – text input that LUIS extract Intents from.
Entities – detailed information in a relevant that LUIS can extract.
BotBuilder SDK can work with LUIS out of the box!
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DemoLUIS

31. Summary
Chat bots are another form of UI (NLUI)
Microsoft Bot Framework makes it easier to write your bot
Standard connection to various channels
BotBuilder SDK
Integration with cognitive Services
The trickiest part is still designing the conversation
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A BIG thank you to the 2018 Global Sponsors!

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Presenter contact details
@MoaidHathot
moaidh@codevalue.net
http://www.moaid.codes
www.codevalue.net
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Workshop - https://github.com/MoaidHathot/bot-workshop
Demo - https://github.com/MoaidHathot/FoodBot