Filler-words? There are many，有很多很多，比如：

XX酒店在北京路

Emm, you know there's this restaurant in BJ road ...

或: There's this restaurant in BJ road, you know ...

哦，不对，在建国路

Umm, sorry... no, it's ZG road 或：No! Sorry，I mean ZG road!

或：Oops! I got it wrong, sorry! It's in ZG road *actually (* 也属于fillers，意思是 "其实")

Basically，ahem or emm or hey or hmmm or err you use to call for attention or make a pause in speech; oops & sorry 表示错了；umm 有时候也可以表示疑问的