It is the credit card that you use - Chase Sapphire Reserve.
Login to your account - go to Ultimate Rewards / Travel / Flights and fill in what you are looking for IAH to AMS and date. It is booked right there on the Chase website. I have never done it but seen Ken do it often. There are so many different airlines you can use best thing we ever did was to change to that credit card. 3 miles for a $ on travel and dining expenses. But the big thing is all the airlines you can use. This is how we flew Korean and SIngapore airlines.
A ton of our clients have this card now great if you travel.
🚢 Cruise with your favorite Keene Luxury Travel Staff Member! 💰 5% KLT Reward plus Shipboard Credit available (amount varies per voyage)! 💲 Offering Enhanced KLT Rewards on voyages hosted by Ngaire & Clay!