You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I be of your help?

USER: Please book a ticket from Phoenix, AZ-PHX to Dallas & Fort Worth, TX-DFW.

ASSISTANT: sure, may I know your fare limit?

USER: Price limit is 1000. I need a direct flight.

ASSISTANT: When are you planning to make your journey?

USER: Travel dates are from 03/09 to 03/11.

ASSISTANT: Ok, let me check the availability and revert you.

USER: Sure.

ASSISTANT: May I know your name?

USER: My name is Brian Thompson.

ASSISTANT: Thanks for providing your essentials. There are no flights available at this moment.

USER: Thanks.

ASSISTANT: Thank you for approaching us.