Hi Nina!

Hi there! :)

How are you feeling now?

I hope you are feeling much better than a while ago.

And take care of yourself.

I know that you are quite a busy person.
See you later!

T. Nina ^^

Hi Nina!
>> correct!  
Do you have a lunch?

>> Did you have lunch?

>> OR: Did you eat lunch?

This is a korean style greeting.
>> correct! ( Capitalization: Korean ^^)
I took a flu injection in the morning.

>> correct!

>> OR:  I had a flu injection this morning.

So i\'m little tired now.
>> correct! ( Capitalization: I ^^)

>> OR: So, I feel a bit tired.
Anyway, Yes i make presentations very often.

>> Anyway, yes, I make presentations very often.

This is my job.

>> correct!

i can make a presentation if the data is sufficent.

>> correct! (capitalization and spelling)

Sometimes i have to make a persentation with insufficent data.

>> Sometimes I have to make a presentation with insufficient data.

That time i feel fustrated.

>> At that time, I felt frustrated.