If a passenger wants to buy a ticket for a flight that is sold out， you should：

If a passenger wants to buy a ticket for a flight that is sold out， you should：
A.Just say "tough luck" and end the conversation.
B.Offer to put them on a wait list and explain the process and chances of getting a seat.
C.Try to sell them a ticket for a completely different destination.
D.Tell them to buy a ticket from another airline without further help.
正确答案：B
试题解析：当乘客想购买的航班已售罄时，客服人员应积极为乘客提供解决方案。