"There was never a consideration for firing an employee or anyone around it", Munoz told Wall Street analysts on a Tuesday conference call.
"You can and should expect more from us and as CEO I take full responsibility for making this right".
In the week since United Airlines made headlines when a ticketed passenger was aggressively hauled off his flight, the company has updated its crew travel policies to ensure passengers won't get booted and compensated all travelers on the fateful fight.
United announced late last week that it would stop the practice of involuntarily removing passengers from planes once they'd boarded, as was the case on Flight 3411.
It has already triggered calls for a boycott of the airline by Asian groups in the U.S., as well as in Vietnam and China.
The chief executive says no one will be fired over the incident.
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United Airlines, City Of Chicago Will Keep Evidence Related To Passenger Dragging: Lawyers for Dr. David Dao had asked for a court order last week so that video and records from the flight wouldn't be discarded.
A spokesman for the House of Representatives panel did not say who the committee plans to call as witnesses.
The flight had been overbooked, as the airline was trying to make room for four crew members from a sister airline.
United President Scott Kirby said that "it's really too early for us to tell anything about bookings", while noting that the company's April-June financial forecast had not changed.
"We are looking at a broad array of issues", Munoz said.
While growth in the trans-Pacific market has been slower than that of United's domestic air traffic, according to recent earnings reports, the company has been expanding its trans-Pacific routes in recent years. "A lot of people have ideas and thoughts about how we can make things better, but in that segment, there's been a lot of support", he said.
During the conference call, Munoz said that he planned to have "further conversations with customers and related government officials" during an upcoming trip to China that had already been scheduled prior to the public relations nightmare.