Gregg works as a travel agent and helps people book flights for business trips and vacations. He uses a computer system that allows him to search for the best deal for his clients. However, the system he uses has a serious bug: if he types the date for the trip in an incorrect format, the system freezes and leaves him unable to continue his task. Which of the following would be the best way to help solve Gregg's problem?
Update the interface with blinking text near the date input box to remind the user of the proper formatting of the date.