You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Mark Jones from New York. I have to go to Chicago in this week. Can you please help me in booking flight ticket for me?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Can you share me your travelling dates?

USER: I want to take off on 09/15 and book my return ticket also on 09/17.

ASSISTANT: Ok, can I know your nearest airport codes for the journey?

USER: I would like to fly from JFK and destination airport is ORD.

ASSISTANT: Give me a moment.

USER: Ok.

ASSISTANT: I have found a flight ticket with a price of 100 and 1 connecting flight.

USER: That's perfect, please confirm this flight ticket for me.

ASSISTANT: Ok, your ticket is booked.

USER: Thank you for your help in booking flight ticket.

ASSISTANT: Thank you for contacting us.