Biby: Could you bring us our check?
毕比：能给我们账单吗？

Waiter: Here you are. Who will settle the bill?
服务员：给您，谁买单呢？

Biby: Be my guest．Lyon.
毕比：我来买单，李昂。

Lyon: OK, it will be my turn next time.
李昂：好吧，下次我来。

Waiter: Your bill comes to $51  including the tips．
服务员’：加上小费总共是51美元。

Biby: Here you are.
毕比：给你。

Notes:
be my guest 我请客
settle the bill 买单