Hi there! As far as i know, there is no available Answer Guides here in the forums for the Home Bonds Questions .. But i do advice to choose the answer that you think will match for the personality of the Ninja you're talking with ..

For example, you talked to Naruto, ofcourse the answer will be "eat ramen with naruto" .. or with konan "Let's chase their dreams together" .. with Jiraiya-sama "im 18+ lets drink" or "the bathhouse again?" ..

Here you can find some->> https://moshimushi.net/2017/06/09/naruto-online-ninja-bond-chat-answers/

Also, while we're at garden ninjas, this might be useful too:

Remember also that once you reach level 8 bond with a ninja you can autoanswer.