A Reservation Confirmation is a document or message that verifies a booking made for services such as hotels, flights, or restaurants. It typically includes essential details like the date, time, location, and confirmation number, ensuring that both the customer and the service provider have a record of the arrangement. This confirmation can be received via email, text, or printed form, and serves as proof of the reservation. It is important for customers to review the information for accuracy and to keep it handy, as it may be required upon arrival or check-in at the designated location.