Final answer:
The question about what Sebastian says when he wants to leave the cafe with Moira cannot be answered with the provided excerpts, as they do not mention Sebastian or Moira or a cafe setting.
Step-by-step explanation:
The excerpts provided do not seem to directly mention someone named Sebastian or his specific words for wanting to leave a cafe with Moira. It appears that there might have been some confusion in the question provided. The given passages highlight various characters expressing their intentions to leave or discussing departures but without any reference to Sebastian and Moira in a cafe setting. Therefore, without the correct context or reference to the specific work of literature these characters are from, it's not possible to accurately determine what Sebastian says when he wants to leave the cafe with Moira.