You only need 100 amity. My recommendation is to just pop maximum amity buffs, refresh the conversation until you get an easy one such as "Talk Freely" and "Fail to spark interest 1 time". You will generally get somewhere between 1 - 10 amity each time and as long as you don't continue the conversation, you will accumulate the 100 amity you need.
Tip: Investing some energy into the Node helps with the game...a lil bit.
For me my most successful order is:
1 Muadiya
2 Yulas
3 Delnia
4 Lentto
RNG is a my results were between 1 and 4 Amity.
Aim for the Talk free, spark of interest 1 or 2 times, and the fail 1 or 3 times.
You WILL burn through a lot of energy with the contestation shuffles and attempts.
Good luck, and reminder...you need 101 Amity to get the knowledge