Trudy: Are you good with statistics?
Trudy: I need someone to double-check my results
Janice: I’m okay, not great
Janice: Why don’t you ask Amy? 
Janice: She’s a genius
Trudy: I know
Trudy: But I’m not that close with her to ask for this kind of favour
Janice: You don’t need to
Janice: You can come to her as a client 
Janice: She’s doing it as a side job 
Trudy: How much does she charge?
Janice: I think about 40$/hour of her work
Janice: But she works fast, she won’t rip you off.
Trudy needs someone to double-check her statistical results and asks Janice to do this. Janice recommends Amy. Trudy is not comfortable with asking Amy as they don't know each other that well. Amy, however, can do that for a fee.