contract law

1. Very few customers came to the grand opening of Ashley's restaurant on Monday morning so she placed an ad in the following Thursday's local newspaper saying "Grand Opening Saturday Morning-Join Ashley for coffee and let her satisfy your sweet tooth." Bill and Marlene saw the ad and went to the restaurant on Saturday. They sat down at a table and waved over a waitress who was holding a coffee pot. They did not even look at the menu on the table The waitress came over to the table and Bill pointed to his cup; she filled it up with coffee She turned and looked at Marlene: Marlene nodded and her cup was also filled. The waitress then asked if she could get them something and Bill said. "Surprise us with something to satisfy our sweet tooth." The waitress returned with two cinnamon buns. Bill picked up the bun and took a bite. It was much too sweet, he did not like it, so Marlene did not even touch hers. They got up and left the restaurant without paying. The menu listed coffee at a price of $1.75 and cinnamon buns at $2.50. Do Bill and Marlene have a contract with the restaurant