会走的箱子 The suitcase could be able to walk

检票员：请出示您的票！

Ticket-taker:Please show your ticket!

爸爸：给您。

Father:Here you are.

检票员：请进！

Ticket-taker:Please come in!

检票员：嘿！等下！先生，请回来！

Ticket-taker:Hey, wait! Sir, please come back!

检票员：您的箱子自己会走？

Ticket-taker:Your case could go by itself?