这句英语怎么说第85期:"订机票"用英语怎么说

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Raymond: I'd like to make a reservation to Los Angeles for next Monday.
我要预订一张下礼拜一去洛杉矶的机票。
Ground Staff: Just a second and I'll check the schedule.
请稍等，我查一下时刻表。
R: I'll need an economy ticket with an open return.
我要经济舱，回程时间不定的往返票。
G: American Airlines has a flight leaving at 9:25 a.m.
美国航空公司有一个早上9点25分起飞的航班。
R: I guess that's OK. What time should I check in?
这个可以，我应该什么时候去办理登机手续？
G：You have to be there two hours before departure time.
你要在飞机起飞前两小时到达哪里。