Laniaitte asks your assistance in ensuring that Emmanellain doesn't get in the way.
This quest is available if you have completed the quest Onwards and Upwards.
Starting the Quest
Talk to Laniaitte in the Sea of Clouds to begin the quest.
Speak with Emmanellain
Go to the quest icon on the map and talk to Emmanellain to proceed. Choose whichever dialogue option you wish.
Speak with Honoroit
Talk to Honoroit to proceed.
Speak with Laniaitte
Talk to Laniaitte to complete the quest.
Next Main Scenario Quest
After you complete the quest, talk to Laniaitte to accept the next quest: Meeting the Neighbors.