Flight tickets from Berlin to Helsinki (super cup) dates

Hi I am a Glasgow Rangers fan who has 3 return flights from Berlin to Helsinki for the 9th - 11th of August for the super cup final.
Unfortunately I booked them before the UEFA cup final (congratulations) all I am looking for is what I paid for them which is far cheaper than they are now I can change the names free of charge.
I also have a hotel sitting with a cancellation policy which can be switched over also.
If any one is interested please let me know through your forum.
Best of luck for the final and your season coming up !!👍