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