Student or Learner
I'd like to know if these expressions are correct and if they can be used interchangeably.
I would like to make a change to my booking/reservation.
I would like to make a modification to my booking/reservation.
The first is fine and natural. The second is overly wordy and even too formal. I would change it to "I would like to modify my booking/reservation".
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.