Satu Dialog mencakup present perfect tense dan simple past tense

A:have you been in paris before?
B:No, i haven't. have you?
A:yes i have it. i have been there last weekend
B: wow, that's cool. But, did you go to bali last month?
A:no,i didn't. did you go there last month?
B:no, i think so. hahaha