You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Scott Brown.

ASSISTANT: How may I assist you?

USER: I am planning to book a ticket from DFW to LAX. Can you please help me out to book a ticket for me?

ASSISTANT: Sure, I can help you in booking process and may I know your preferable travel dates?

USER: I would like to travel on 09/17 and return back on  09/19.

ASSISTANT: Please wait for a moment to check with flight on your details.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no flight on your details to book the ticket to reach your location.

USER: That's fine, please proceed the booking. That' sfine. Thank you.

ASSISTANT: You are most welcome and thank you for reaching us. Have a nice day.