Request for information on work-related seminar (IELTS writing test)

"You should spend no more than 20 minutes on this task and write at least 150 words.
You would like to participate in a work-related seminar in another country. Task: Write a letter to the person in charge of the seminar and ask for detailed information regarding the dates, program, accommodations and cost.
You do not need to write your address. Begin your letter as follows: Dear Sir/Madam, "

Dear Sir/Madam,

I would like to request some information regarding to the seminar for "Web-developers willing to improve their qualification". Your company conducts will conduct this seminar later this fall in New Orleans.

Our company provides an opportunity opportunities for it's staff members to improve their proficiency. Annually, every staff member has a chance to get a free trip to a work-related seminar for not longer than one week, and not more expensive than $3000 USD. This year, we have a group of 7 web-developers willing to attend your seminar. That's why I need the following information:
1) What is the cost and duration of the seminar? Are there any group discounts?
2) Are there enough free places for our group?
3) What is the type and additional cost of accommodation? We would like to live stay not too far from each other. Is there a possibility to settle us inside one building?
4) What are the main titles of the lectures? How many practice lessons will be held?

Please, send me this information by email or skype. I need this information not later than 17 Sep. 2013.

Yours faithfully,
Vladimir.

Very good Vladimir. You included all of the information that the question required, and you had very few corrections needed. Your letter is very well written.