[E-Mail] Airline Ticket Reservations

Dear Sir or Madam,

I am going to fly from A to B on the earliest flight. Could I book one economy class seat on a flight leaving A on May 12th?
The Agricultural Bank of China has been instructed to pay the fare and booking fee, and I would ask you to submit your invoice directly to them?

I will appreciate your early confirmation.
Sincerely yours,
Brain