Eric was driving back to hishometown one afternoon.He was driving through a snowstorm and hiscar went into the ditch.He managed to walk to the farm house of Mr. and Mrs. Olds, a retired farm couple.He stayed with the Oldsfor two days until the storm passed.Mr. Olds used his tractor to pull Eric's car out of the ditch.

When Eric got home his father,Dan Dad, called up the Olds and said he was so grateful for everything he had done for his son that he would be sending them $300 as his way of saying thank you.Dan Dad never sent the money.Do Mr. and Mrs. Olds have a legal case against Dan Dad?Why or why not