Concession letter

sir,
i beg to state that we are participating in technical fest (i.e event name ) we are spending amount per person in registration for the event and amount for travelling per person and amount for making of robots per person its a group of 7 students so we are spending amount in total we are representing institute name over there so we request you to provide us the required amount
so kindly grant my application
thanking you
your's sincerely
student1 name - roll num
student2 name - roll num
student3 name - roll num
student4 name - roll num
student5 name - roll num
student6 name - roll num
student7 name - roll num

if it is not correct please give me the correct way to write this ............