A seller sent an email to a potential buyer, offering to sell his house to her for $150,000. The buyer immediately responded via email, asking whether the offer included the house's front porch swing. The seller emailed back: "No, it doesn't." The buyer then ordered a front porch swing and emailed back to the seller: "I accept your offer." The seller refused to sell the house to the buyer, claiming that the offer was no longer open.
Is there a contract for the sale of the house?