Listen to the whole passage
Listen to the whole passage once first, then practice sentence by sentence.
The first line is the other person opening the conversation; the "You" lines are suggestions for you to practice saying in this scenario (not a back-and-forth dialogue).
A friend giving directions
你好，你要去哪儿？
Hello, where do you want to go?
You
你好，我想给北京的朋友寄一本书。
Hi, I'd like to mail a book to a friend in Beijing.
You
请问，我在哪儿能寄书？
Excuse me, where can I mail a book?
You
那儿远吗？
Is it far?
You
我怎么去那儿？
How do I get there?
You
我走路去，可以吗？
Can I walk there?
You
我知道了，谢谢你。
I got it, thank you.
You
谢谢，再见。
Thank you, goodbye.