You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you?

USER: My name is Melissa Smith. I want to travel from ORD to DTW. Could you help me in booking the ticket?

ASSISTANT: Sure, please provide the departure and arrival dates?

USER: The dates of travel are from 11/19 to 11/21.

ASSISTANT: There is a flight 1008 available on your requested dates. Shall I confirm your ticket?

USER: Please book the ticket.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your time.