United Continental CEO Oscar Munoz told CNBC on Wednesday he’s “very concerned” with the company’s overbooked flight controversy and wants to make sure there are no lingering issues.

The United chief said the company is focused on reliability, flexibility and information for its customers.

“We have such rigid rules sometimes that they don’t have to be rules; they can be policies and procedures that can be adapted for the moment,” Munoz said on “Squawk Box.”

“And when things do go wrong, it’s so important that we tell customers what’s going on as best as we can,” he said.

Munoz spoke after United reported second quarter earnings and revenue on Tuesday that beat Wall Street’s expectations.

The airline operator is recovering from a viral public relations nightmare after video surfaced of a passenger being forcibly removed from an overbooked United Express flight operated by Republic Airways in April.

–CNBC’s Christine Wang contributed to this report.