Q: Which information does the available field in the flight object provide?
A: This field is here to let you know if your option (flight + rates) is bookable through our API.
To know if an option is bookable, examine two critical fields within the flight object: available in the root, and bookable within the features object.
If both are true, the option is eligible for online booking. However, if either are false or not part of the response, your booking request will be preemptively rejected due to the reasons explained in the availabilityReasons field available in the response.