Arisa and Satoshi, actually you do not need to repeat the question at the beginning, just tell me the Q.no. is fine. The first one is quite short, but it is ok to have a short goodbye for good friends. Second one, Satoshi stated the reason why he had to leave (have a meeting soon), Arisa got it and said goodbye too. I am not sure "Have a good time" is appropriate or not in an office situation (Satoshi might have a meeting with a trouble client!) If I were Arisa, I would say "Good luck". Well done! Both of you improve a lot!
Arisa and Satoshi, actually you do not need to repeat the question at the beginning, just tell me the Q.no. is fine. The first one is quite short, but it is ok to have a short goodbye for good friends. Second one, Satoshi stated the reason why he had to leave (have a meeting soon), Arisa got it and said goodbye too. I am not sure "Have a good time" is appropriate or not in an office situation (Satoshi might have a meeting with a trouble client!) If I were Arisa, I would say "Good luck". Well done! Both of you improve a lot!