英語作文，急 說明：假設妳是某旅行社員工Mark，給有意向的客戶寫壹份回信。

Dear client, I'm Mark in the tour company.Firstly thank you very much for taking interest in our summer tour line.Please make sure the detail things including the number of persons taking the tour and the time plan.Besides I'll send you the tour plan and the price sheet with the letter.Please contact me if you have any problem. Thank you ! Best wishes! Mark