How do I build A.I. like JARVIS from Ironman?

Ok so I want to make a personal AI assistant like JARVIS which would be able to do almost every task we throw at him… So How do we make it ? What tasks would it be able to do ? What would be the road map to make JARVIS ? What knowledge one must have in order to build an AI like JARVIS ?…. Oh and BTW, I have recently graduated with the degree of Bachelor’s in Technology of Computer Science and Engineering (specialization: AIML)… or in short : B-Tech (CSE) AIML… So, I think I might be able to handle the work, so you guys don’t need to hold back, give me ur best info on how can I build it…. Thanks in advance :)