Verb conjugation of "free" in English

Mr. Kohler, Ms. Johansen, in June I will be in Darmstadt for several days and would like to meet you both. Are you in the week of June 16 to June 20 in Germany? I think I also bring gifts.
I have not been in eastern Germany for a long time, because I have never really had time to travel. What do you do for living and in your leisure time, like the weekends and evenings.
Have you ever visited the U.S. before and if so, where have you been in the U.S.? I've been travelling in California, it was very amazing. We have traveled by car. Here are my corrections.