I'd like a table for three or four at seven.
我想订7点钟的3人或4人桌位。
Please reserve a table for three.
请预留一个3人桌位。
I'm sorry, I'll be about thirty minutes late.
抱歉，我将晚到30分钟左右。
Do I have to be formally dressed？
我必须穿正式服装吗？
B：Good evening. How many people do you have in your party？
晚上好。你们有几位？
A：Two.
两位。