You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I want to visit Phoenix on 03/18 to 03/20.Can you please help me out?

ASSISTANT: Sure, can you provide the airport codes please?

USER: The corresponding airport codes are from DC-DCA to AZ-PHX. My name is Nicole Brown.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight for you in Spirit airline, shall I book it?

USER: Yes, proceed with my booking.

ASSISTANT: Your ticket has been booked with flight number 1029 and price is 100.

USER: Thank you for your service.

ASSISTANT: You are welcome.