The airline has been working with startup Fetcherr to develop what executives have called a “super analyst,” capable of analyzing large volumes of data and setting fares more efficiently. Currently, AI influences about 3% of Delta’s (NYSE: DAL) domestic ticket prices, but the company expects that figure could rise to 20% by year-end.

Pushing back on a letter from three U.S. senators, Atlanta-based Delta Air Lines said Thursday that it is not, and has not, used or are testing an artificial intelligence system for ticket pricing.

Delta Air Lines canceled nearly 200 flights over the weekend at the Hartsfield-Jackson Atlanta International Airport in the overnight hours into Friday morning as a result of some bad weather.