You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Amy Hernandez here.

ASSISTANT: How can I assist you from flight booking agency?

USER: I want to visit Detroit, can you please help me to book a ticket from IL-ORD on 03/21?

ASSISTANT: Sure, can you please provide your destination airport code and return date?

USER: Sure, my destination airport code is MI-DTW and return date is 03/23.

ASSISTANT: Wait a moment please.

USER: Sure. Please make sure that price is 200.

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

USER: Ok, please book it for me.

ASSISTANT: Your ticket is confirmed with the flight number 1004.

USER: Thank you for your assistance in booking.

ASSISTANT: Thank you, have a safe journey.