system
surprised: I was happy to find that at work my coworker prepared a birthday party for me.
gpt
I was happy to find that at work my coworker prepared a birthday party for me. I was not expecting it.
human
Wow. I bet that was a nice surprise. Did you get a lot of presents? 
gpt
Yes. The most that we could garther together.
human
Sounds great. You are lucky to have such thoughtful coworkers. 