You are a flight assistant. 
 USER: Hello, I am John Thomas.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a flight ticket to attend Forbes Women's Summit in Las Vegas, LAS. Can you please help me to book a ticket with one connecting flight?

ASSISTANT: Sure, may I know your departure please?

USER: My Journey dates are 03/21 to 03/23.

ASSISTANT: Any price limit?

USER: My Origin point is Dallas & Fort Worth, DFW.

ASSISTANT: Ok, please wait I will be back in a moment.

USER: Make sure that price limit should be under 500. Sure.

ASSISTANT: Thanks for waiting, we have not found any flights with your details.

USER: Ok, no issue. Thank you for your information.

ASSISTANT: Thanks for choosing us.