American Express earlier this week acquired Mezi, a personal travel assistant app, that helps consumers plan and book trips, according to a press release.

The Mezi app enables travelers to message requests for flights, hotel or restaurant reservations, and provides recommendations and makes travel arrangements at the customer's request.

Founded in 2015, Mezi uses artificial intelligence and human expertise to personalize the online travel discovery and booking experience. By learning travelers' preferences, and understanding the way customers make requests using natural language, Mezi gets smarter and more efficient over time, according to the release.

The acquisition of Mezi follows an investment made in 2016 by American Express Ventures, the strategic investment arm of American Express, as well as a successful pilot with American Express Card Members. For those currently already enrolled in the AskAmex pilot, it will continue to run through the first half of 2018.

"American Express has always been synonymous with superior service and we couldn't be more thrilled to join the company," Swapnil Shinde, co-founder and CEO of Mezi, said in a release.