answer: #Person1# and #Person2# decide to buy Mary's birthday gifts together. They'll call Mary's roommate, Malia, for suggestions.
documents: #Person1#: I have no idea what to buy for Mary for her birthday.
  #Person2#: Me neither! Would you like to go in and buy her a gift together?
  #Person1#: Yes, that would be good!
  #Person2#: We need to think about what she might like. What are her interests?
  #Person1#: If I remember right, she likes music, skiing, and reading.
  #Person2#: You know, maybe we could get her some concert tickets. Who would know her favorite groups?
  #Person1#: Her roommate, Malia, might know what her favorite groups are.
  #Person2#: Yeah, Malia would be able to help us choose a concert.
  #Person1#: Let's give Malia a call and ask her for her help right now.
  #Person2#: Good! Maybe Malia would like to go in with us on this gift.