Hey there, I am Brian, I left an email about the apartment for rent.
Hello Brian thanks for writing. Do you have any questions about the apartment?
I do, it's about the price. I like the location of this apartment very much, but the price is ridiculous. The post says there is a $500 off special. I'm curious, is that deducted from the price you listed the apartment at? 
It would be on the price we both agree upon.
So then with the $500 off, how does $700 sound all together?
There is no way that would be possible.
Then can we work out a deal close to that? I can assure you that I can pay rent on time.
The lowest I'm authorized to go is 900. And that would be the flat monthly rent. The first month's rent would be 400 with the deduction. 
If I give you 900, could we settle free parking for my first month as well?
Yes that can be done. So overall you'll be saving quite a lot. So 900 is good for you?