You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I serve you?

USER: Please book me a flight ticket from IAH to ATL to meet my family.

ASSISTANT: Sure, Please help me with your journey dates.

USER: I have planned to travel on Oct 24th and return on Oct 26th.

ASSISTANT: Do you have any connection limit?

USER: I prefer connecting flight.

ASSISTANT: Is there any other requirements?

USER: I like economy class.

ASSISTANT: May I know your name?

USER: Steven Turner.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.