When a passenger requests a ticket change， what information do you need to verify first？

When a passenger requests a ticket change， what information do you need to verify first？
A.Their favorite movie
B.Their original ticket details including flight number， travel dates and passenger name
C.Their pet's name
D.Their car model
正确答案：B
试题解析：当乘客要求更改机票时，首先需要核实其原始机票的详细信息。