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游客:
Hello, this is Yang Zheng. I am booked on flight LJ88 for Japan on September.10th. 
你好.我是杨峥.我预订了张9月10号去日本的LJ88航班的机票.
工作人员:
Hold on please.- Yes you are booked already.
请稍等--是的.您已经预订了.
游客:
Now I am afraid I can`t get to the airport on that day. I want to change my flight for 12th .Is that all right?
恐怕我那天不能按时去机场了.我想将我的航班换到21号.请问可以吗?
工作人员:
I am sorry. Flight LJ88 on that day are full. What about 13?
抱歉.12号LJ88航班已经预订满了.13号的票行吗?
游客:
Fine. Thank you so much.
好的.非常感谢.