Virtual Assistants Overview
Natural Language Processing (NLP)
Concepts and Terminology
Help & Learning Resources
Quick Start Guide
Accessing the Platform
Navigating the XO Platform
Building a Virtual Assistant
Using Workspaces
Release Notes
Current Version
Previous Versions
Request a Feature
Conversation Designer
Dialog Tasks
Mock Scenes
Dialog Tasks
Navigate Dialog Tasks
Build Dialog Tasks
Nodes & Connections
Node Types
Intent Node
Dialog Node
Entity Node
Entity Rules
Form Node
Confirmation Node
Message Nodes
Logic Node
Bot Action Node
Service Node
Webhook Node
Script Node
Process Node
Agent Transfer
Node Connections Setup
Context Object
Sub-Intent Scoping
User Prompts
Voice Call Properties
Dialog Task Management
Event Handlers
Supported Entity Types
Supported Company Names
Supported Colors
Knowledge Graph
Knowledge Extraction
Build Knowledge Graph
Create Node Structure
Build the Graph
Add FAQs
Add FAQs from an Existing Source
Run a Task
Traits, Synonyms, and Stop Words
Manage Variable Namespaces
Update Knowledge Graph
Move Question and Answers Between Nodes
Edit and Delete Terms
Edit Questions and Responses
Knowledge Graph Analysis
Knowledge Graph Import and Export
Prepare Data for Import
From a CSV File
From a JSON File
Importing Knowledge Graph
Exporting Knowledge Graph
Auto-Generate Knowledge Graph
Alert Tasks
Small Talk
Digital Skills
Digital Forms
Digital Views
NLP Optimization
ML Engine
Model Validation
FM Engine
KG Engine
Traits Engine
Ranking and Resolver
Training Validations
NLP Configurations
NLP Guidelines
Default Standard Responses
Contextual Memory
Contextual Intents
Interruption Management
Multi-intent Detection
Amending Entities
Default Conversations
Conversation Driven Dialog Builder
Sentinment Management
Tone Analysis
Test & Debug
Talk to Bot
Utterance Testing
Batch Testing
Conversation Testing
Health and Monitoring
Overview Dashboard
Conversations Dashboard
Users Dashboard
Performance Dashboard
Custom Dashboards
Custom Meta Tags
Create Custom Dashboard
NLP Insights
Conversations History
Conversation Flows
Analytics Dashboard Filters
Usage Metrics
Containment Metrics
Smart Bots
Universal Bots
Universal Bot Definition
Universal Bot Creation
Training a Universal Bot
Universal Bot Customizations
Enabling Languages
Manage Assistant
Plan & Usage
Usage Plans
Support Plans
Multilingual Virtual Assistants
Get Started
Supported Components & Features
Manage Languages
Manage Translation Services
Multiingual Virtual Assistant Behavior
Masking PII Details
IVR Settings
General Settings
Assistant Management
Manage Namespace
Data as Service
Data Table
Table Views
App Definitions
Sharing Data Tables or Views
Build a Travel Planning Assistant
Travel Assistant Overview
Create a Travel Virtual Assistant
Design Conversation Skills
Create an ‘Update Booking’ Task
Create a Change Flight Task
Build a Knowledge Graph
Schedule a Smart Alert
Design Digital Skills
Configure Digital Forms
Configure Digital Views
Train the Assistant
Use Traits
Use Patterns
Manage Context Switching
Deploy the Assistant
Configure Agent Transfer
Use Bot Functions
Use Content Variables
Use Global Variables
Use Web SDK
Build a Banking Assistant
Design Conversation Skills
Create a Sample Banking Assistant
Create a Transfer Funds Task
Create a Update Balance Task
Create a Knowledge Graph
Set Up a Smart Alert
Design Digital Skills
Configure Digital Forms
Configure Digital Views
Add Data to Data Tables
Update Data in Data Tables
Add Data from Digital Forms
Train the Assistant
Composite Entities
Use Traits
Use Patterns for Intents & Entities
Manage Context Switching
Deploy the Assistant
Configure an Agent Transfer
Use Assistant Functions
Use Content Variables
Use Global Variables
Intent Scoping using Group Node
Analyze the Assistant
Create a Custom Dashboard
Use Custom Meta Tags in Filters
API Reference
API Introduction
API List
API Collection
koreUtil Libraries
SDK Reference
SDK Introduction
SDK Security
SDK Registration
Web Socket Connect and RTM
Using the BotKit SDK
BotKit SDK Tutorial - Blue Prism
Widget SDK Tutorial
Web SDK Tutorial
Introduction to Admin Console
Administration Dashboard
User Management
Add Users
Manage Groups
Manage Roles
Assistant Management
Invite Users
Send Bulk Invites
Import User Data
Synchronize Users from AD
Security & Control
Using Single-Sign On
Security Settings
Cloud Connector
  1. Home
  2. Docs
  3. Virtual Assistants
  4. How Tos
  5. Travel Planing Assistant
  6. Travel VA: Using Global Variables

Travel VA: Using Global Variables

The XO Platform allows you to declare and use variables within the assistants you build. These variables can be used to capture values that are commonly used by different tasks, nodes, and other elements.

In this Use Case we will explore a scenario in a Travel Planning Assistant, where Variables can be used. We will see how Global Variables can be used to pass API endpoints and change them easily when migrating from development to testing to production environments.

For details on what Variables are and how they are implemented in the XO Platform, refer here. For a use case with Content Variables, refer here.

Problem Statement

In our Travel Planning Assistant, we have two tasks:

  1. Check Flight Status, which makes a service call and retrieves the flight status based on a flight number provided by the user. 
  2. Update Booking, which makes a service call to update user bookings based on the booking number and type of update.

Both the above tasks call the same service and the service API endpoint changes for development, testing, and production environments.

Changing the service call in both the Dialog Tasks is cumbersome and can lead to errors, if the change is not done properly.

In this document, we will see how Global Variable can be used to store the API endpoint and use it for the service calls.


To go through these configurations, you need to know at least the basics of building a Virtual Assistant. This is because your assistant needs to have been already built when you begin working on your variables.


Declaring a Global Variable to hold the API endpoint will help make the transition easier and faster.

  1. Open the Travel Planning Assistant.
  2. Select the Build tab from the top menu.
  3. From Configurations select the Environment Variables section.
  4. Click Add Variable to open the corresponding window.
  5. Enter Variable Name and Variable Value. For this use case, we are calling the Variable bookingURL, and for value, we are entering the Service API call endpoint.
  6. Save.

  7. Now open the Check Flight Status Dialog Task.
  8. Select the Get Status Service Node.
  9. Click Edit Request under the Request Definition
  10. Replace the request URL with the Global Variable created above. using the env prefix followed by any parameters needed. In this case:
  11. Repeat for the Update Booking Dialog Task.
  12. Now when you Export and Import the assistant to another environment, all you need to worry about is to change the value of the Global Variable and the changes will be effective in both the Dialog Tasks.