You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello\. How can I assist you?

USER: I am Rebecca Barker. I am planning to book a ticket from IAD to CLT. Can you please help me out to book a ticket for me?

ASSISTANT: May I know your travelling dates?

USER: I would like to travel on 06/19 and return back on 06/21.

ASSISTANT: Here is a flight ticket with fare 100 and UA as airline name with 1001 as flight number. Shall I proceed for booking?

USER: That's fine, please proceed the booking.

ASSISTANT: Ok, your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.