answer: #Person1# thanks for #Person2#'s letter and #Person2# inquires about #Person1#'s waist problem. #Person1#'ll be back again next Wednesday.
documents: #Person1#: Thank you for your letter.
  #Person2#: Is your waist any better?
  #Person1#: Yes, I'm feeling very well these days.
  #Person2#: I'm glad you are getting better.
  #Person1#: And I was glad to receive your letter.
  #Person2#: Then when will you be back again?
  #Person1#: I will be back again next Wednesday.
  #Person2#: I hope to see you at that time again. Bye.
  #Person1#: Bye.