When Janey goes through the list of things Olivia will need on her date, she mentions scarf & gloves and runs to get her Christmas present. Olivia goes on her date without the new scarf and gloves.
When Olivia sits down in the diner, her milkshake glass is full, a little later it is half full, when the waitress delivers their burgers, her glass is full again.
When Casey telephones the tow truck company, the only information he receives before hanging up is that it will take an hour to arrive. When Olivia returns home, she mentions to her mother that the tow truck company will telephone her, such information which was not discussed in Casey's telephone conversation with the tow truck company.