There is no time difference between Chicago and Dallas. Both cities use Central Time (CST, UTC-6 in winter and CDT, UTC-5 in summer). When it's 9:00 AM in Chicago, it's also 9:00 AM in Dallas.
Both cities observe daylight saving time on the same schedule, so they remain synchronized year-round.
Any time works! Since both cities share the same timezone, you can schedule calls during standard business hours (9:00 AM - 5:00 PM) without any time conversion needed.
Chicago and Dallas are two of America's largest business centers. Direct flights take about 2.5 hours, and both cities are major hubs for American Airlines and United Airlines.