You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I need to travel Las Vegas about my company work there in the month of October and need to departure in the afternoon. Can you aid me in booking my flight ticket from DFW to LAS?

ASSISTANT: Sure, when are you planning to start and return on?

USER: Thank you for considering my request. I have planned to start on Oct 12 and need to return back on Oct 14.

ASSISTANT: May I know your name?

USER: Sure, I am Charles Martinez.

ASSISTANT: There are no flights found with the given details.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you.