answer: #Person1# is inquiring about a summer course at an evening school and #Person2# tells #Person1# the duration, timetable and class scale of the course.
documents: #Person1#: Good morning. Can I help you?
  #Person2#: Yes, please. I would like to know about the courses at this evening school.
  #Person1#: Is that a summer course you're interested in?
  #Person2#: Yes.
  #Person1#: Well, we have short full-time courses during the summer.
  #Person2#: Mm-mm, I would like to know how long one course lasts.
  #Person1#: Yes. Each course lasts three weeks.
  #Person2#: How many hours per week, please?
  #Person1#: It's about twenty-three hours a week. Usually four and a half days each week.
  #Person2#: You must have a lot of students in the class, haven't you?
  #Person1#: We have a lot of students in the school, but in the classes only between twelve and fourteen students.
  #Person2#: Could you please give me the dates of the first and second courses?
  #Person1#: Yes, certainly. The first course begins on July 3 and lasts until July 20 and the second course is from July 24 until August 10.
  #Person2#: OK. Thank you very much.
  #Person1#: You're welcome.