A dialogue between teacher and student about using a calendar

    Student    : Good morning, Sir.

    Teacher   : Good morning. How are you?

    Student    : I am fine. Thank you, sir. How are you?

    Teacher   : I am also fine. Thank you.

    Student    : Sir, would you please tell me how to use a calendar?

    Teacher    : Of course. Look at the calendar. What do you see?

    Student    : Names of months and days.

    Teacher   : Nothing else?

    Student   : There are dates also. Some are black colour and some are red colour.

    Teacher   : You have almost learnt. The dates and days tell you what date is in which day.

    Student   : Colour of dates?

    Teacher   : The red colours are holy days and the black colours are working days.

    Student   : Thank you, sir.

    Teacher   : No mention.