Translation of acerbity in Spanish

I am from Italy, but I studied in Frankfurt, in Germany. I am done with my bachelor degree. I am an Engineer since last June. where are you from? Which language do you want to practice? I will start studying next week.
Sammy our cab driver brought us to the hotel, he promised to pick us up a few hours later. We took a shower and rested a little. I could not sleep because I was too excited of being in a new country.
We than found out that a plane was leaving 3 hours later to the city of Calama (with the national airline), which was the closest airport to our destination. However, only one seat was available. That was really annoying.