It is too late.
Richard :Mary, would you like to get something to eat with me?
Mary :OK. When?
Richard :At 10 O'clock.
Mary :10 in the morning?
Richard :No, at night.
Mary :Sorry, that's too late. I usually go to bed around 10:00PM.
Richard :OK, how about 1:30 PM?
Mary :No, that's too early. I'll still be at work then.
Richard :How about 5:00PM?
Mary :That's fine.
Richard :OK, see you then.
Mary :Alright. Bye.