Explanation:

Explanation

Scenario: Guests must receive a separate email to verify proof of ownership for their registration.
Note: You can setup redeem an invitation code for power apps portal.
Reference:
https://carldesouza.com/how-to-setup-redeem-an-invitation-code-for-power-apps-portal/

Explanation
Graphical user interface, text, application, email Description automatically generated

Box 1: Entities
Out of the box, Power Virtual Agents comes with a set of prebuilt entities, which represent the most commonly used stereotype information in real-world dialogs, such as age, colors, numbers, and names.
With the knowledge granted by entities, a bot can smartly recognize the relevant information from a user input and save it for later use.
Box 2: Topics
In Power Virtual Agents, a topic defines a how a bot conversation plays out.
You can author topics by customizing provided templates, create new topics from scratch, or get suggestions from existing help sites.
A topic has trigger phrases - these are phrases, keywords, or questions that a user is likely to type that is related to a specific issue - and conversation nodes - these are what you use to define how a bot should respond and what it should do.
Box 3: Variables
Variables let you save responses from your customers in a conversation with your bot so that you can reuse them later in the conversation.
For example, you can save a customer's name in a variable called UserName. The bot can then address the customer by name as the conversation continues.
You can use variables to create logical expressions that dynamically route the customer down different conversation paths.
Reference:
https://docs.microsoft.com/en-us/power-virtual-agents/advanced-entities-slot-filling
https://docs.microsoft.com/en-us/power-virtual-agents/authoring-create-edit-topics
https://docs.microsoft.com/en-us/power-virtual-agents/advanced-flow
https://docs.microsoft.com/en-us/power-virtual-agents/authoring-variables