from the cheapest basic economy AC fare rules:
​​​
CANCELLATION (refund) and CHANGE restrictions say:

WAIVED FOR THE DEATH OF THE PASSENGER OR PASSENGER
FAMILY MEMBER OR PASSENGERS TRAVELLING COMPANION.
DOCUMENTATION REQUIRED.
IN THE EVENT PSGRS ARE CALLED TO JURY DUTY OR ARE
SUBPOENAED FULL REFUND WILL APPLY UPON
PRESENTATION OF JURY SUMMONS OR SUBPOENA PROVIDED
FLIGHT SEGMENTS ARE CANCELLED PRIOR TO TICKETED
DEPARTURE DATE.