You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Please help me out in booking the ticket from PHX to PHL.

ASSISTANT: Sure, I can help you in that. May I know your travel dates?

USER: My trip dates will be Nov 14 to Nov 16.

ASSISTANT: Ok, do you have any preferences?

USER: I want direct flight.

ASSISTANT: May I know your name?

USER: Gary Moore is my name.

ASSISTANT: Gary Moore, there is no flight available as per your requirements.

USER: That's ok, thank you.

ASSISTANT: You are welcome and thank you for choosing us.