options: m : i 'll call her at 10:00 . m : i 'll call her at 9:30 . m : i 'll call her at 8:30 . m : a customer is coming at 9:00 so i 'll call her at 10:00 .
article: f : shall i book your call to the managing director , mystae kimura for tomorrow ? m : oh yes , please . f : what time ? m : it 's usually the best time for her , but a customer is coming in at 8:30 and we wo n't finish our discussion until 9:30 , and better make it 10 to be safe . f : ok .