Alright, I can't write you an essay but I can give you some key points that you can talk about.
1. Office environment is air-conditioned and it provides people a condusive place to work at.
( You can talk about how working under the sun is tough )
2. Nowadays, people are well-equipped with technological skills and working in the office provides them the tools to work with.
3. People can communicate effectively in an office.
