Molly operates a motorcycle repair shop from her home but finds her business is limited by the small size of her garage. Driving by a neighbor's property, she notices a for sale sign on a large, metal sided garage. Molly contacts the neighbor and offers to buy the building, hoping to dismantle it and move it to her property. The neighbor accepts Molly's payment and makes a generous offer in return; if Molly will help dismantle the garage, which will take a substantial amount of time, he will help Molly reassemble it after it has been transported to Molly's property. They agree to have the entire job completed within two weeks. Molly spends every day for a week working with his neighbor to disassemble the building, declining several lucrative repair jobs in her rush to acquire a larger workspace. Once the disassemble building has been moved to Molly's property the neighbor refuses to help Molly reassemble the building as originally promised. When was a contract formed? Please fully explain including the how and why or why not the elements of the contract fit the fact pattern