Comments on calendar Week/Day cards [closed]

I have built a week calendar for space booking, and I'd be interested in feedback on the look and functionality.

How it currently works: the user selects checkboxes, then clicks on "Book Selected Slots" to confirm the booking of selected periods (two day periods in this example, AM and PM). The current day is in gold (March 1 in this example), and so is the currently selected period used for displaying details (March 5, PM in this example).

enter image description here

My questions:

  1. Look: any advice to improve it? And maybe add some depth to the design? I'd be interested to compare with other similar calendars.
  2. Steps: would there be a more intuitive way than the current two steps? Here too, I'd be very interested to see similar designs