Translation of Auftragnehmer

The connecting flight to Phuket was fully booked, and the connection to Krabi had five empty seats. The problem was that the boarding began in ten minutes and I did not even have a ticket.
Everything's fine over here. The weather is a bit crazy, but otherwise everything is ok. I wrote this one based on what you gave me previously. This is a very common form of saying it in Spanish outside Argentina.
So this is my last week here in Germany, then it's back to Italy. I'm not sure if I will return soon. But I am longing for friends and family. I will certainly return one day, that is sure.