You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need to book a flight ticket from CLT to DFW, Can you please help me for booking?

ASSISTANT: Sure, I am here to help you. Can I have your planned travel dates please?

USER: I would like to travel on 07/02 to 07/04.

ASSISTANT: May I know your name please?

USER: I am Justin Young.

ASSISTANT: Justin, no flights has been found on your planned travel dates.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for choosing us.