You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you?

USER: I am Jessica Hall here. I need to book a flight ticket from PHX to ATL . Can you help me with booking?

ASSISTANT: Sure, on what dates are you willing to make your trip?

USER: I want to start my journey on Dec 31 st and return back on Jan 2nd.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: How much can you afford for this booking?

USER: I can afford up to 5000 to my flight ticket.

ASSISTANT: Delta airline with flight number 1002 is going on your way and the airfare is 100. Is that fine?

USER: Yes, I am ok with this booking.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your kind assistance.

ASSISTANT: Thank you for opting us.