某公司所登游泳训练广告称其有称职教练，一周包会。假如你叫李明，游泳会一点，但水性不太好，想在国庆长假参加训练，请用英语写一封信询问训练的具体时间、地点、条件、费用等。100词左右。
参考词语：教练 instructor
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Dear Sir (or Madam),
I have read your advertisement in the newspaper. You mentioned in your advertisement that
your instructors are fully qualified and you ensure that learners will be able to swim after one week’s training. Although I can swim a little, yet I am not very confident in the water. So I am interested in taking part in the training course. Fortunately, I have a seven－day holiday from October 1 to October 7. I would like to know when and where the course will be given, and how much the seven－day course costs. Besides, is there anything special that should be prepared or does your company provide everything necessary?
Looking forward to hearing from you soon.
Sincerely yours,
Li Ming