When did the woman buy the vacuum clean*

W Hi, I’d like to return this vacuum cleaner. I purchased it last week. It’s running fine, but it’s really difficult to push on my carpet.
M Oh, I’m sorry to hear that. Would you like to look around and exchange it for something else? All of our vacuum cleaners are 15 percent off today.
W No, thank you. I’ll just return this one. I couldn’t find the receipt, but I purchased it on my Appliance Town credit card last Thursday. Can you look up my account?
M Yes, I just need to see your card and driver’s license.