Please correct the letter

[Annecy]

Please note that Mr. Nair is going to travelling on 05.04.2008, so please arrange to pay his settlement and book the train ticket on the same day
as requested. detail as follows.

Train route - xxxxx to xxxxx

Also, please arrange the settlement one day before his travel as he need
to do some his own things.

 

[Neillythere]

As a Brit, but not a teacher, I would have written:

Mr. Nair will be travelling on 05.04.2008.
Please book his train ticket for that day.

Details as follows:
Train route - xxxxx to xxxxx

Could you please arrange for his settlement to be paid at least one day earlier, as he has some things of his own that he needs to do prior to travelling.

Hope this helps