1. I want a package deal including airfare and hotel.

我需要一个成套服务，包括机票和住宿。

2. I'd like to change this ticket to the first class.

我想把这张票换成头等车。

3. I'd like to reserve a sleeper to Chicago.

我要预订去芝加哥的卧铺。

4. I'd like to sit in the front of the plane.

我要坐在飞机前部。

5. I'd like two seats on today's Northwest Flight 7 to Detroit, please.

我想订两张今天西北航空公司7班次到底特律的机票。