You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: How can I book a flight ticket to Denver, CO - DEN from NY - JFK, can you aid me?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: Ok, my travel dates are 06/28 and 06/30 respectively.

ASSISTANT: Can I know your name please?

USER: Ok, please book on the name Jack Harris.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: Ok, please book.

ASSISTANT: Ok, your ticket has been booked with flight number 1002.

USER: Thank you for assisting me.

ASSISTANT: Thank you for choosing us.