Owen reveals his concern about his time commitments.
At the beginning of the conversation it seems as though Owen is uninterested in attending practice. His question to his dad starts "So, I guess" which reveals a lack of interest on his part. However, we learn the real reason of his hesitation regarding hockey practice at the end of the conversation. He tells his dad "I'm worried I can't manage everything." This shows that he seems overwhelmed with his school work and hockey. His time commitments are a concern for him.
