You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Christopher Martinez. I would like to attend my colleague's ring ceremony at Denver, can you please help me with booking a flight ticket?

ASSISTANT: Ok, may I know your travelling dates?

USER: My preferable journey dates are 05/09 and 05/11.

ASSISTANT: Please mention your airport codes of your journey?

USER: My boarding point is DFW and landing point is DEN.

ASSISTANT: Ok, here is a flight with 200 fare and 1017 as flight number . Shall I proceed for booking?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.