Chapter 11 - Lisa's Truck Case

Lisa posts a flyer around town that reads, "Reward: $500 for information about the person who keyed my truck last Saturday night in the Ground Round parking lot. Call Lisa at 555-5309."

Wendy calls Lisa the day after the flyers are posted and says, "I promise you that I will find the person that did this to your truck! I am a private investigator and I will drop everything and focus on finding this person. I will not rest until I find out who did this!"

Two days later, Ken, the manager of the Ground Round, calls Lisa and tells her that he saw a man keying her truck and gives her a description of the man and his vehicle.

What type of contract was Lisa seeking to form? Have either Wendy or Ken formed a contract with Lisa? Is anyone entitled to the $500 reward?