D:David M:Mark
    D:Hi,Mark,you look pale today,what's wrong with you?
    M:Well, I've got just finished a small operation
    D:oh, I am sorry to hear that.do you feel better now?
    M:Much better.I've took the medicine which the doctore had asked me to take.
    D:Thanks godness!you had better mind your own hea
    lth next time.By the way,is the doctor professional?
    M:oh maybe,he looks professional.
    D:Jesus,I have heard that the doctors are not professional in some hospitals in our city,that makes many patinents upset.Many hospitals are not strict with their doctors.
    M:I hope I am lucky.I went to the North Wall hospital.
    D;oh that is a good one.how do you know that hospital?
    M:the ads of course.
    D:Got it.I have saw their ads many times.
    M:I think the ads really help them a lot.
    D:I can not agree no more.well,actually you need rest.maybe I will come to your home and pay you a visit.What do you do in your spare time?
    M:I am fond of chatting on the Internet.Can you give me your QQ number so that we can chat online.
    D:My pleasure.See you online!
    M:See you!