You woke up crying in your dream and cried for a long time after waking up, which at least shows one thing: you love your father very much, and you are a very filial child. You care about him in your heart.
You know, something will happen sooner or later. So what matters is not what this dream indicates, but what you should do before these things happen. I don't know if you lose your temper occasionally, or if you often stay away from your parents because of study and work. I just want to tell you that your parents didn't ask you anything, but your filial piety must be early and you must try your best. Even if you try your best, you can't give them extravagant things.
Maybe this dream is a subconscious reminding you to spend more time with your parents and care more about them. That's all.