Leia owns a robot repair shop.Luke walks into the shop with his robot, shows it to Leia, and asks if she can fix it.Leia tells Luke that she will fix the robot for $150.Luke says he will think about it and leaves, taking his robot with him.The next day, Luke walks back into Leia's shop.Without saying a word, he hands the robot to Leia and leaves.Leia repairs the robot and asks Luke to pay $150, but he refuses, claiming they did not form a contract.

do Luke and Leia have an express contract, an implied contract, or no contract at all to repair the robot, and why?