It's important to not frame it as a transaction, or the person you are asking might evaluate it as such. People want to feel like they are doing something for

It's important to not frame it as a transaction, or the person you are asking might evaluate it as such. People want to feel like they are doing something for nothing in return, just goodwill and karma. But they are more likely to help if you make them feel that way AND give them something in return.