As the Head boy / Head girl of the school write a notice informing the students of your school about the trip that will be going to Manali during the summer holidays.

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it is very easy you can do it.

ABC SCHOOL 
NOTICE
A  TRIP TO MANALI
​This is to inform you that there is a trip to Manali on 1 November to 3 November.The timings for school to check out is 10 o' clock to 12 o' clock in morning.The students will be taken to Manuallaya hotel.Those who are interested should pay 5000 Rs. to their class teachers latest by 29 October.
Priyal Agrawal
​Head Girl
 

yep