Four Gals Burgers restaurants hired Sky-High Marketing, Inc., to fly a banner above Virginia Beach. The banner offered $1000 to anyone who could swim to Chesapeake Bay from Virginia Beach in less than a day. At 10:00 am on Saturday, Sky-High Marketings pilot flew a sign above the Virginia Beach that read: Swim to the Bay and Four Gals pays $1000. On seeing the sign, Patterson dived in. About four hours later, when he was about halfway to the Bay, Sky-High flew another sign over the Beach that read: Four Gals revokes. Patterson completed the swim in another five hours. Is there a contract between Patterson and Four Gals? Can Patterson recover anything?