Hi, I am Amy Brown.
user
Hello, how can I help you?
assistant
 We are planning to go Washington, DC - DCA, to participate in the event of fashion designer with my colleagues from Houston. Can you help me to book a flight ticket from TX - IAH?
user
Sure, can you please share your travelling dates?
assistant
I would like to travel on 12/05 and 12/07.
user
Do you have any specifications?
assistant
I need a connecting flight. Make sure the price limit does not exceed 500.
user
Please wait for a while, I will check and get back to you.
assistant
Sure.
user
Sorry to say that we did not found any flights with your given details.
assistant
Ok, no problem. Thanks for your quick response.
user
Thanks for choosing us.
assistant