We can conclude that ________.

From the text, it can be inferred that Danny is disappointed about the cancellation of their plans. The statement "Great, he thought, I really wanted to see her tonight" suggests that Danny had been looking forward to spending time with Mindy and going to the movies. His sigh and subsequent apology text indicate his disappointment and desire to express his feelings to Mindy. Additionally, the statement "wondering if she would ever text him back" suggests that Danny is left uncertain about Mindy's response, further emphasizing his disappointment.