Harry runs a caf next door to a vacant commercial building with a large car park that is visible from the road. Rubbish starts to collect in the car park, and grass and other plants are left to grow.It begins to look a mess. Harry is worried that people might think the caf is connected with the car park, so he clears away the rubbish, mows the grass and takes care of the plants. Two months later Emma, the owner of the building, comes into the caf and says she has been told that Harry had cleaned up the car park and is very thankful as it has saved her a lot of time and money. She promises to pay Harry $1,000 for his work in a week's time. After a week Emma messages Harry and says sorry, she can no longer pay Harry the $1,000. Advise Harry whether he is legally entitled to payment of the $1,000 - you must justify and explain your reasoning.