Hello, I see youre interested in my mountain bike.
hi, yes I am! i see your listing for 300 but what's your best price?
well the best offer i had so far was 260
ok, can you tell me more about the condition?
Its in great condition, in fact Its only been used one time. 
ok, actually 260 is well over my budget but i like the bike, i can do 260 but pay you in 3 monthyl installments, does it work?