Hi.
Hello,. How can I help you?
I want to book a flight ticket from TX-IAH to DC-DCA.
May I know your name please?
I am Susan Hall.
 Sure, can you please provide your travelling dates ?
My departure date is march 23 and return date is march 25.
OK, Please wait for a minute. I will check with your requirements and let you know. May I know if you have any connection and cost limit?
My connection limit is 1 and price limit is 500.
Sorry, There is no flight as per your requirement.
OK, thank you for your information.
Thank you. Have a nice day.