answer: #Person1# invites Lisa to go shopping. Lisa can't go and advises #Person1# to ask Mary.
documents: #Person1#: Lisa, I'm going shopping downtown this afternoon. Would you like to go with me?
  #Person2#: I'd like to but I have arranged to discuss the project with Mister Cook. I'm also going to a party with Bill this evening.
  #Person1#: But you know, I'm not good at bargaining. How I wish you could help me.
  #Person2#: Why not ask Mary to go with you. She loves shopping. She can help you.
  #Person1#: Good idea. I'll go and ask her. Thank you.
  #Person2#: You're welcome.