I have three fields I want to combine, with separators.

FieldA (text field), example: Bob

FieldB (text field), example: Smith

FieldC (date field), example: 10/28/2020

I would like a calculated field to show the following:

"Bob: Smith, 10/28/2020"

How would be the best way to go about doing this? I've tried combining the fields using + " " + but that didn't work.