You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I serve you at this moment?

USER: Andrew King here. I would like to book a ticket from PHX to ATL, can you please help me with that?

ASSISTANT: Sure, can you please let me know your journey dates?

USER: The travel dates are from 12/28 to 12/30.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I need a direct flight.

ASSISTANT: Do you have any have other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: Andrew King here.

ASSISTANT: Sorry, there are no flights are available matching your specifications.

USER: That's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.