好的，请把机票给我。让我先看看明天下午到北京的航班情况，13:50，15:30，16:40和17:50，共有四班，您想换乘几点的航班?

• OK, give me your ticket please.Let me first check the status of flights.There are 4 flights leaving for Beijing tomorrow afternoon, taking off at 1: 50 pm, 3: 30 pm, 4: 40 pm, and 5: 50 pm, respectively.Which one do you prefer?