A joke,for translate

题目

A joke,for translate
Picked from Google,but I can't understand completely.pls help me,thanks!
I went out last night,and I got back at the hotel at 7:30 this morning.I went up to the desk to leave a wake-up call for 7:00.The lady goes,'Mr.White,it's past 7:00.' 'No,the next one.You got another one coming around,don't you?Why don't you just put me on that one?I hear they're running two a day through New York City.'
Actually,the essence and question are both lay on the last sentence.appreciate for who can elaborate on for me.

答案

昨晚一晚上都在外面,在早上7：30我回到了旅馆.我去前台要了一个定在早上7：00的叫醒服务.服务员回答：“怀特先生,现在已经过了7：00了!”“不,我要的是下一个.你在下一个7：00到来的时侯,知道吗?你为什么不在那个时候叫醒我?我听说纽约一天当成两天过!”