In this task, you're given the title of a five-sentence story and the first four sentences. Your job is to write the last sentence of the story such that it seamlessly connects with the rest of the story.

Title: Flight Delay. Sentence 1: Joe went to the airport to catch a flight to visit some relatives. Sentence 2: Unfortunately, his flight was delayed due to bad weather conditions. Sentence 3: Joe had to wait a half day until another flight was available. Sentence 4: Afterwards, Joe flew on that airplane and arrived at his destination.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Joe was very happy that he was able to visit his relatives.