You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from DFW to PHX to meet my friend. Can you please book a direct flight ticket?

ASSISTANT: Sure, could you please provide your journey dates?

USER: Sure, my journey dates are Aug 25 and Aug 27.

ASSISTANT: Do you have any other specifications to be met?

USER: I am looking for a normal cost airline like UA, AA, Hawaiian.

ASSISTANT: Are you looking for any preferred class?

USER: No.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your valuable time, unfortunately no flights available on that route.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us. Can I have your name for processing?

USER: I am Christine White.

ASSISTANT: Thank you.