A&B:Hi,C&D.
C&D:Hi.
A:Where did you guys traveled this summer vocation?
C：We have been to Boston this summer vocation.There are so many famous colledges there.We all went to Harvard Univercity,Boston Univercity,Boston Colledge,and MIT.They are so great.The students study so hard.
D:And we always can see they read books on the grass after lunch.This trip was so great.I suppose you should go there next time.
B:Wow!That sounds so interesting.
(i live here so i describe my hometown to u.maybe it does not work.i hope it can help u)