Thanks for your reply! Yes, it's easier to write exciting stories for fantastical settings, but that doesn't seem to be the problem here. I just think that many conversations get boring after a while. They are either too long or not interesting enough.
I'm not a writer but let me give you some potentially irresponsible advice: I dare you to reduce all dialogues with Crystal and the MC's friend to half the length. Just focus on what's most important and see what happens.