Translation of weltschmerz in German

Hans was not in the office for 4 days. I informed him that it is urgent and asked him to send it by tomorrow morning. I'll do my best that you receive it as early as possible. Trust me on that.
I will forward the words to you tomorrow or Sunday, once they give their OK. Which hotel did you book? Did you speak to the Chef de cuisine and can I make the reservation at the restaurant?
I boarded the AA flight to Cancun, and got there around two o'clock. It was my first time in Mexico. On the same night I had a flight booked to Havana, but I did not know whether I should take it.