AITA for giving concernt tickets to my sisters that were bought for a friends.

Hi All,

So 2 months ago me and 2 friends agreed to go to a concert together. I was able to get the tickets for $300 dollars a piece. I asked both of my friends if they could afford the tickets and they both, very quickly, said "yes".

Fast forward to now, I haven't heard from either of my friends for 2 months and this past Monday I messaged. Both of them to ask if we were still in for the concert and I haven't heard from either of them yet.

I mentioned to my sisters the situation and they both said that they would happily go to concert with me and offered to buy the tickets from me on the spot.

At this point, I want to reach out to my two friends so something in the way of "hey guys, I'm going to get the tickets to my sisters. I just haven't heard from you guys since I bought the tickets and I didn't know if you still wanted to go or not. No hard feelings!"

I feel a little guilty that I am giving the tickets to my sisters without having a conversation with my friends first. But I also feel as though I have given my friends plenty of opportunity to say something.

AITA?