I'd like to make an appointment with Mr Morris, please. 我想约见莫里斯先生。
How about next Friday evening, at 4 o'clock? 下周五下午4点怎么样?
Shall we say 10 o'clock at my office? 可以10点到我办公室吗?
10: 30 would suit me better, if that's OK with you. 如果10点半你没问题的话,对我来说就更好了。