> For the complete documentation index, see [llms.txt](https://developer.rategain.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.rategain.com/our-products/smart-distribution/book-and-cancel-reservation/book-api/book-reservation.md). # Book Reservation The **BookReservation** transaction is used to create a new booking. The minimum required information typically includes: | Property, room type and rate plan codes | | ---------------------------------------------------------------------- | | Arrival and departure dates | | Number of guests and rooms | | Guarantee method (this normally means sending the credit card details) | | Primary guest’s name and contact details | | Special requests or comments (optional) | #### Request Message The following is an example booking request **without** session control (Passive participation): ```xml ``` #### Response Message The response then includes the confirmation number: ```xml ``` --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://developer.rategain.com/our-products/smart-distribution/book-and-cancel-reservation/book-api/book-reservation.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.