answer: #Person1# asks #Person2# to change #Person1#'s seat to the front.
documents: #Person1#: I feel terrible sick, miss. I wonder if I could change my seat to the front part.
  #Person2#: Please wait a moment. . I am sorry right now there is no vacant seat. I have to ask.
  #Person1#: Thank you.
  #Person2#: By the way, hold your bag in case you vomit.