story: Chad needed a hotel for a overnight stay in Atlanta. Chad decided to book a stay at his regular hotel online. Chad was surprised when he found out the hotel was booked. Chad then had to find another hotel to stay at. Chad was upset that his favorite hotel was booked.
 selected sentence: Chad was surprised when he found out the hotel was booked.
Chad found out his regural hotel was already booked >Causes/Enables> he had to find another hotel