The first problem for all of us, men and women, is not to learn, but to unlearn
Answer:
Change your to youre
Explanation:
you are makes the most sense in this sentence
To ;
The Manager
Travel Agency Name,
Address of Travel Agency
Sub: Arrangement for holiday trip
Dear Sir/Madam,
I would like to request you for making arrangements for a holiday trip for a period of 7 days starting from 18th February, 2017. The trip would comprise of the following places [Destination1, Destination2 and Destination3] for a family of 3. We would like to board from [Origin] on the night of 18th February and halt at Destination1 for 2 days. From there, we would depart for Destination2 on the night of 20th February halting for another couple of days. On the 22nd of February, we shall leave for Destination3 for another 2 days. And finally, we would head back home on the night of 24th February.
I would be very much obliged if you could arrange for a flight schedule for the above mentioned trip and kindly forward a copy of the same for our reference at the earliest. I am attaching the personal details of the members such as Name, Age, Gender, Address etc for your convenience. I would be very much happy to oblige any other formalities required by the Agency. In case, the Agency requires any other clarification. I can be contacted at [mobile number] or by email [email address].
Thanking you in anticipation.
Yours faithfully,
Your name
Your address