You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I assist you?

USER: Shirley Mitchell here. I am looking for a flight from 03/19 till 03/21, can you help me out?

ASSISTANT: Sure, can you please provide your nearest airport codes of travelling for a better search?

USER: I planned a round trip. So, my destination and source is same that is JFK.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Spirit airlines is providing service on this route with a ticket fare of 200, shall I book your ticket?

USER: Please proceed with it.

ASSISTANT: Shirley Mitchell, your ticket is confirmed with flight number 1003.

USER: Thank you for your help.

ASSISTANT: Thank you, have a safe journey.