system
surprised: My girlfriend got tickets for a concert this weekend. Its my favorite band and I thought tickets were sold out. Im super pumped up. 
gpt
I got home from yesterday and my girlfriend got me concert tickets for this weekend. I thought it was sold out. I couldnt believe she did that.
gpt
What concert is it ?
gpt
The band Phoenix. She really caught me off guard with this. Apparently she bought them a while back but waited until now to tell me. 
gpt
What a pleasant surprise.