'I am always busy' means that you are always constantly doing something (Working for example) e.g 'I am always busy, i don't have time to do what i want to do.' 'I am always gone' i think should be 'I am always away' e.g 'I am always away from home' 'Gone' tends to be used in the past tense so a example would be Friend1:'Where is Nina?' Friend2:''She is gone' meaning she has left.

it means,i am always not available either i am out (gone) or i am in but busy

shes not there or shes just not avaible= )