system
A chat on subreddit /r/me_irl
human
That’s borderline worse. Like if “hi” didn’t work and you actually want to talk with person, say something else. Just “hi” is not a way to start a conversation.
gpt
It bothers me how many people assume that not responding within 30 minutes is some sign of disinterest/disengagement. 

Like, I know I'm not a particularly avid texter, my view of acceptable response times may be skewed, but 30 minutes?! How is the first thought not "well, they didn't happen to be on their phone at the exact time I wrote something" but "how can I overcome this lack of interest."