Dallas is the most populous city in the dallas fort worth 
I have never been to Dallas, how many people live there?
In 2010 when reported it states that 1.1 million currently live there
Do you know what would be a good time to visit Dallas?, sounds like a hot city to me
not much information on when to visit but i would say anytime of the year, another fact is that texas is known to be the center for the oil and cotton industries.
Great, know of any interesting places to visit there?
Dallas would be a nice place.  Very highly populated city with lots to do 
Yes but I meant what places to visit in Dallas
Dallas Cowboys
The Dallas Cowboys are a professional American football team based in the Dallas–Fort Worth metroplex. The Cowboys compete in the National Football League (NFL) as a member club of the league's National Football Conference (NFC) East division. The team is headquartered in Frisco, Texas, and plays its home games at AT&T Stadium in Arlington, Texas, which opened for the 2009 season. The stadium took its current name prior to the 2013 season. The Cowboys joined the NFL as an expansion team in
Garland, Texas
Garland is a city in the U.S. state of Texas. It is located northeast of Dallas and is a part of the Dallas–Fort Worth metroplex. It is located almost entirely within Dallas County, except a small portion located in Collin and Rockwall counties. As of the 2010 census, the city had a population of 226,876, making it the 93rd-most populous city in the United States of America and the 12th-most populous city in the state of Texas. In 2017, the population rose