You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me in booking the flight ticket from DFW to ATL?

ASSISTANT: Sure, I am ready to help you. Can you please share your journey dates?

USER: My travel dates are Sept 17 and Sept 19.

ASSISTANT: Is there any class preference?

USER: I prefer to travel in economy class.

ASSISTANT: May I know your name?

USER: Eric Lee.

ASSISTANT: Do you have any connection limit?

USER: I need a single connection.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: Sorry, there are no flights found on your trip dates.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for choosing us.