It took us about one hour to get to her place . It took me about 30 minutes to get from one end of the airport to the other ! The weekend was filled with parties on the roof top to celebrate 4th July with fantastic fire works , going out enjoying the Denver orchestra playing in the park and eating lots of food , not to mention spending lots of money , as this was indeed the city of outdoors !

Based on the preceding passage, answer the following question What may be the reason for them being at the airport ?
Visiting to celebrate July 4th .