get
https://api-dev.despegar.com/v3/payments
This service is used to quote the aforementioned pre-book and obtain the payment methods, amounts, and discounts associated with it. You can interact with this service by including the points the customer wishes to redeem, to generate a quote based on the points the end customer wishes to quote. The only valid Payment ID is the one generated during the last service query. For example, if this service has been performed three times, the valid ID is only for the most recent service.
Next step: Book
To proceed to the booking step, use the prebook_id from the Prebook service response, and the plan_id and points from the Payment service response.