Hello
Hello, I saw your ad for your iphone 7, so it is brand new sealed in box?
Yes, Its completely brand new. Never used. 
Will it work with Boost Mobile?
It's unlocked and will work with every service provider. 
Excellent, I think my only concern is the lack of a warranty.  Do you provide any protection?  What if it breaks within the first week or month of using it?
Good question. It does not have a warranty, but I believe that apple-care is around $99. I could knock off a bit of the selling price so that you could purchase the apple-care. I'm looking to get this off my hands ASAP.
Okay, I'm comparing it to several other offers I've seen on ebay.  What about if we do $550 so that I can get that applecare warranty and I'll bring you cash today?
That's a bit low for me. This model sells for around $1,000 if you were to purchase a new one today and the condition of this phone is completely new and untouched. What if I offered $620?
I'm still a little nervous that it won't work with my network, if it doesn't work with Boost will you take it back within 24 hours?
I understand. I would definitely take it back as long as it's within a 24 hour period. You could check with your provider and get back to me. You could also do that while we're together before you even hand me the money.
Okay good idea, then let's meet and I'll bring the $620 and call Boost while we're together, sound good?