answer: #Person1# asks #Person2# about the exchange rate and changes some US dollars into euros.
documents: #Person1#: I'd like to change some US dollars into euros and I'd like to know today's exchange rate.
  #Person2#: According to today's exchange rate, every US dollar in cash is equivalent to 0. 75 euros.
  #Person1#: Is there any service charge?
  #Person2#: We charge a 1 euro commission on each deal. How much would you like to change?
  #Person1#: 400 US dollars. Here it is. Would you please give me small bills?
  #Person2#: No problem.