answer: #Person2# helps #Person1# buy a flight ticket the next morning because the tickets for this afternoon are sold out and #Person1# thinks traveling at night is dangerous.
documents: #Person1#: I'd like to buy a flight ticket for this afternoon.
  #Person2#: Alright. To Washington or to New York?
  #Person1#: To New York, please.
  #Person2#: I'm sorry. the tickets to New York for this afternoon have been sold out, but we still have some left for this evening.
  #Person1#: For this evening? I'm not used to traveling in the evening.
  #Person2#: Why? An evening flight will cost much less.
  #Person1#: I think it's more dangerous to travel at night.
  #Person2#: So what about a flight tomorrow morning? It takes off at 6:06 and it arrives at New York one and half hours later.
  #Person1#: Alright. I'll take this one. How much is it?
  #Person2#: 480 dollars.
  #Person1#: Here is the money. Thank you.