Thank you. I was indeed able to book a new flight under the original pax name. Hopefully by the end of the year, the situation will improve enough for him to fly again as well and I will then rebook him on a flight he actually wants to take

I also wonder what happens if I cancel a ticket booked with non-refundable voucher. Would I be issued refundable or non-refundable voucher? If the former, that would actually be a great option too.