You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: I want to visit CNN Center in Atlanta.Can you please help me for booking the flight ticket from GA-ATL to TX-HOU?

ASSISTANT: Sure, your date of journey & your name please?

USER: The travelling dates are from 10/27 to 10/29. My name is Rachel Carter.

ASSISTANT: I am sorry there is no flight as per your details. Thank you.

USER: Ok, It's fine. Thank you for your information.