You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Andrew Clark. I need to book a flight ticket from IAD to ORD, Can you please help me for booking?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to travel on 06/27 to return on 06/29.

ASSISTANT: Here is a connecting flight with fare 100 and 1008 as flight number. Shall I proceed with booking?

USER: Ok, proceed for booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thanks for your information.

ASSISTANT: Thank you for reaching us.