Translation of evolution in Spanish

In the early morning, before going to the airport we went to the travel office of the Vietnamese airline company to avoid about possible problems with the entry. They assured us that everything was fine.
Nice to meet you. I am learning English but my English is very bad, we could exchange messages in Spanish. I have got all the chat applications on my laptop. Sorry again for writing with many mistakes.
The next day we decided to spend on the other side of the mountain range (antiplano), in Bolivia. We didn't have the courage to drive deep into Bolivia, as everyone told us about the bad infrastructure and condition there.