answer: #Person1# asks #Person2# about the time of arrival and the duration of customs clearance.
documents: #Person1#: Excuse me, what time do you expect to land in Berlin?
  #Person2#: We should be there by 5 this afternoon.
  #Person1#: Do you have any idea how long it will take to clean customs?
  #Person2#: Well, it all depends on traffic from other arriving aircraft.