My wife and I took # 742 to Barcelona ( July 22 ) and returned August 3 on # 715 from Venice . We traveled in economy . Both flights had the worst food we have ever experienced on a domestic or international flight . This was in addition to the antiquated entertainment system and lousy service . Leaving we sat on the plane for one and 1/2 hours with no air conditioning . How long can this airline survive --- Any one else could not be worse .

Give answer the following question using evidence from the above passage: What leads the speaker to question the amount of time that the airline can survive ?
The speaker was very dissatisfied with the airline and they ca n't be the only one who have had this experience