I am writting a resume, which of the following sentances are correct?

1. I would like to obtain a summer internship in the investment banking or financial planning fields.

2. I would like to obtain a summer internship in the investment banking or financial planning field.

if neither is correct, what would be the correct way of saying this

It's:

I would like to obtain a summer internship in the investment-banking or financial-planning field.

(note the hyphens)


Personally, I prefer:

I would like to obtain a summer internship in the field of investment banking or financial planning.


(note the hyphens have gone)