Dialogues　

1. 我想订去西安的往返机票。Wǒ xiǎng dìng qù xī'ān de wǎngfǎn jīpiào.
I'd like to book round trip tickets to Xi'an.
If you plan to visit the famous city Xi’an and would like to book a round trip ticket, you can say:Wo3 xiang3 ding4 qu4 xi1'an1 de wang2fan3 ji1piao. wo3 xiang3, I want to. ding4, to 4, to go to. xi1'an1, as one of the most important cities in Chinese history, Xi'an is one of the Six Great Ancient Capitals of , a particle. It doesn't have any specific meaning. wang2fan3, round 1piao, air ticket.
　

2. 有打折的票吗？Yǒu dǎ zhé de piào ma?
Do you have discount tickets?
The way of asking if they have discount tickets,You can say: You3 da3zhe2 de piao4 ma? You3, to have. da3zhe2, to give a discount. de, a particle. piao4, ticket. ma a particle used at the end of the sentence.
　

3. 行李托运吗？Xíngli tuōyùn ma?
Do you have any luggage to check in?
when you order tickets, they may ask you like : xing2li tuo1yun4 ma? xing2li, luggage. tuo1yun4, check in. ma,a particle indicating the question.
 

4. 我想要一个靠窗的座位。Wǒ xiǎng yào yí gè kào chuāng de zuòwèi.
Can I have a window seat?
Wo3 xiang3 yao4 yi2ge4 kao4 chuang1 de zuo4wei4. Wo3 xiang3 yao4, I want to have. yi2ge4, one. kao4 chuang1 de, next to the 4wei4, seat.Wo3 xiang3 yao4 yi2ge4 kao4 chuang1 de zuo4wei4. I want to have a window seat, please. There is a rule for the sentence pattern. Wo3 plays the role of subject. And Xiang3yao4 means want to have. Wo3 xiang3 yao4 plus a noun can express what ever I want to get.For instance, wo3 xiang3 yao4 yi2ge4 ping2guo3. I want to have an apple.　

5. 我找不到行李了。Wǒ zhǎo bú dào xíngli le.
I can't find my luggage.
If you can't find your luggage.Go and ask the workers at the airport for help. Tell them: wo3 zhao3 bu2 dao4 xing3li le. wo3, I. zhao3 bu2 dao4, can't find. xing3li, , the particle comes at the end of the sentence to indicate that new circumstances are about to occur. In this sentence, it tells us that you couldn't find your luggage now.