Buying Shoes

Sales clerk: Anything I can do for you？ 
Melissa: I want a pair of sneakers. (brand name items) 。 
Sales clerk: We have a great variety of them in stock. We have some good buys. What kind would you like to see？ 
Melissa:This pair.
Sales clerk:This pair of ?Mizuno shoes are really good. 
Melissa: How much？ 
Sales clerk: 120 dollars. 
Melissa: Oh, my god! How expensive! Can you cut the price a bit？ 
Sales clerk: We don't usually give discounts. We give 30 percent discount off the price. It comes to 84 dollars, Ma'am. 
Melissa:That sounds reasonable. I'll buy them. 
Sales clerk:Is there anything else you might need？ 
Melissa:No, thank you. See you. 
Sales clerk: See you. Have a nice day!