answer: #Person2# shows the breakdown of $ 5, 000 budgets to #Person1#. It shows the cost of airline tickets, accommodations, food expenses and other incidentals. They are estimated to $ 4000, and the last $1000 is the buffer.
documents: #Person1#: How much do you have budgeted for our trip to Las Angeles?
  #Person2#: In total, it should be about $ 5, 000 for the week conference. Would you like to see the breakdown?
  #Person1#: Yes, I want to know exactly where the money is going. Give me a detailed report.
  #Person2#: First we have the airline tickets, which are $ 500 per person ; with four of us going, that's t $ 2, 000. For our accommodations, we're spending $ 80 a night, per room, for five days. That's another $ 800.
  #Person1#: Weren't you able to find anything less expensive? We're sharing rooms, right?
  #Person2#: I have two people to a room. The $ 80 room rate is the lowest I could find. With the conference going on that week, all the hotels have inflated their prices, they're making a killing.
  #Person1#: So far we have $ 2, 800, what else?
  #Person2#: I have budget $ 25 per Peron per day for food expenses. That totals another $ 800. And for other incidentals, like take fees, and tips, I have estimated about $ 400.
  #Person1#: Well, that's only $ 4000. Didn't you tell me your budget was $ 5000? Where is the rest of the money?
  #Person2#: That's my buffer. . . I wanted to leave a little room in the budget, just in case---it's better to be safe than sorry.