Hello.
user
Hello, how may I serve you?
assistant
I am Patrick Hall and I want to meet my cousin who stay at Los angeles,CA-LAX from Dallas&Forth Worth, TX-DFW.
user
OK, I can help you in reserving the flight ticket for the same. But, for that I need to know your exact date of journey. Can you do that for me?
assistant
Sure, my travelling dates are from  10 /18  to 10/20 and the price limit should be with in 500.
user
OK, sure. I have checked the airline database but, there was no flight available according to your credentials. Sorry for the inconvenience.
assistant
OK, no issue.
user
Thank you for approaching to us. Have a good day.
assistant
Thank you for your information.
user
My pleasure.
assistant