it actually kind of sounds rude

Father: you reached him?
Me: Yep. I'm on the 30 and should be home by 5ish. He said he'd be swinging by around then.
Father: lucky you
Father: ok
bye
Me: lol, you don't need to say bye when you are texting.
Father: ok. But I feel incomplete if I do not.
Father: ... Bye.