The demo shown below is taken from the official Mermaid documentation here.
Textual representation
journey
title My working day
section Go to work
Make tea: 5: Me
Go upstairs: 3: Me
Do work: 1: Me, Cat
section Go home
Go downstairs: 5: Me
Sit down: 5: Me
👉 Check out the official Mermaid documentation here https://mermaid-js.github.io/mermaid/#/user-journey