WOW Booking Error

request.log

POST /api/midgardur/v4/reservations HTTP/1.1
Host: booking.prod.wowair.net
Origin: https://booking.wowair.com
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9,de;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Content-Type: application/json
Accept: application/json
Referer: https://booking.wowair.com/passengers
Connection: keep-alive
Cache-Control: no-cache
Postman-Token: 5a6f75bf-8e6e-e9bb-9ce0-c3dd860eee52

{"reservation":{"paxServicesList":[],"apiKey":"","bookingFees":{"creditcard":0,"Voucher":0,"IngenicoCreditCard":0,"IngenicoDebitCard":0},"payment":[],"fareTypes":["1"],"flightList":[{"logicalFlightId":211939,"flightNumber":"118/720","origin":"BWI","destination":"SXF","bundleId":1,"departureDateTime":"2018-04-28T19:00:00","fareBasisCode":"XVIANR","fareClassCode":"X"}],"bookingLocale":"en_US","selectedSeats":[{"paxIndex":0,"physicalFlightId":101124,"logicalFlightId":211939,"flightNumber":"118","seatLetter":"F","row":7},{"paxIndex":0,"physicalFlightId":101311,"logicalFlightId":211939,"flightNumber":"720","seatLetter":"F","row":11}],"passengers":[{"middleName":"","paxType":1,"lastName":"KnyFlores","gender":"F","citizenship":"US","redress":"","paxIndex":0,"paxTypeName":"Adult","birthDate":"1981-10-29","emailString":"steffi.knyflores@gmail.com","isPrimary":true,"firstName":"Steffi","mobileNumberString":""},{"middleName":"","paxType":5,"lastName":"KnyFlores","gender":"F","citizenship":"US","redress":"","paxIndex":1,"paxTypeName":"Infant","birthDate":"2017-08-23","emailString":"","isPrimary":false,"firstName":"Klara","mobileNumberString":""}],"promocode":"","bookingDomain":"us","reservationCurrency":"USD"},"customerIpAddress":"127.0.0.1"}

response_body.json

{
  "ErrorCode":82,
  "ErrorCodeName":"InventoryNotAvailable",
  "ErrorMessage":"Flights are no longer available",
  "ReferenceNumber":"M9AWVSKW"
}