answer: #Person2# suggests #Person1# sit in the back with #Person2#. #Person1# tells #Person2# #Person1#'s last name.
documents: #Person1#: Where should I sit?
  #Person2#: Why don't you sit in the back with me?
  #Person1#: Okay.
  #Person2#: By the way, what's your last name? I forgot what it is.
  #Person1#: It's Lin. It's spelled L-I-N.
  #Person2#: R-I-N?
  #Person1#: My pronunciation is not very good. It's L-I-N, Lin.
  #Person2#: I got it. Mary Lin.
  #Person1#: Lin is a common Chinese last name.