You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket to IL-ORD, help me in booking my flight ticket to NV-LAS.

ASSISTANT: Sure, Can I know your travelling dates?

USER: I want to start on 01/03, my return date is on 01/05.

ASSISTANT: May I know your name?

USER: I am Steven Hall.

ASSISTANT: We found a flight on AA airline, flight number as 1002 with the fare of 200. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.