You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: Could you please help me in flight ticket booking process from PHX to CLT?

ASSISTANT: Sure, let me know your trip dates?

USER: Thank you for your response, I want to take off on Dec 02 and book my return ticket also on Dec 04.

ASSISTANT: Do you have any preferences?

USER: I will prefer direct flight.

ASSISTANT: Can you share your name to proceed further?

USER: Sure, my name is Rachel Smith.

ASSISTANT: Frontier Airlines has a direct flight with number 1002 for fare 200, shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for opting us.