You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself James Phillips.

ASSISTANT: How may I help you today?

USER: I am planning to visit Charlotte, will you help me in booking the flight ticket from DFW to CLT?

ASSISTANT: Sure, let me know your travel dates please?

USER: My preferable journey dates are Oct 02 and Oct 04.

ASSISTANT: Do you have any specific arrival and depart time?

USER: Make sure that my depart time must be in afternoon.

ASSISTANT: Ok, is there any class preference?

USER:  I always prefer economy class.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection.

ASSISTANT: Do you need any airline preference?

USER: No, thank you for asking.

ASSISTANT: Sorry to inform you that there are no flight services available on your given details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a nice day.