Thank you for your hard work on the business trip. Thank you for the many souvenirs. Incidentally, I apologise for asking this of you when you are busy, but could you send the data?
I hope your business trip went well. Thank you very much for all of the souvenirs. I'm sorry to ask while you are busy with other things, but could you please send me that data?
Welcome back (*you must be tired from your business trip). Thank you very much for the gifts (or souvenirs). By the way, I know you are busy, but is it possible for you to send the data?