Starting from iOS 12, the system allows Siri to suggest you Shortcuts for the things you do on your device to perform them faster, and Calendars supports this as well.
Use a simple Siri command to access your schedule within seconds.
To use Siri Shortcuts, update your device to the latest Calendars version, as well as update your system. If it hasn't automatically, go to the App Store > Updates, find Calendars, and tap Update.
Shortcuts can be created in the Shortcuts app.