Ask for a leave
Dear Sir,
I am terribly sorry to inform you that i am unable to go to school today owing to a severe headache. I enclose a certificate from the doctor who is attending on me, as she fears it will be two days before i shall be able to resume my study. Could you kindly excuse my absence on Monday and Tuesday? Thanks.
XX
Make an appointment note
Sir,
Fred is now with us,He is going to New York tomorrow morning to pursue his graduate study and we will not be able to see him for a long time.We are having a dinner party at 7 p.m this evening at my home. It would be nice if you could come over and see him.
XXX
Leave a Message
Sir,
A friend of yours,Zhang, made a long distance call from America this morning while you went out. He asked you to book a air ticket for Japan at 2:30 a.m.,February 8, and make a reservation for hotel room tonight.I am sorry I can’t pass on the massage to you in your presence,because I was ordered to do some thing urgent.
XXX