Translation of cordial in German

Anyway you let me know...the rest of the days I will be busy with the course. I am Italian but I live in Wien, Austria. I have not heard back from you since I sent you a message. Do you still want to chat my friend?
Hi! Thank you for your invitation and for your very kind messages. I'm sorry but it is very late here and I prefer to write you tomorrow. When is the best time to chat? See you later than.
Thanks a lot for the correction, they are very helpful and so are you in general. As I mentioned earlier I need more practice to write entire sentences in French and it takes a lot of time.