You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Paul Taylor. I am planning for a  round trip from IAD to IAD, can you please help me with booking a flight ticket?

ASSISTANT: Sure, may I know your trip dates please?

USER: Sure, I would like to take off on 01/20 and return on 01/22.

ASSISTANT: There is a flight which can travel to your region having a single lay out in between your journey having a ticket fare of 100 which is provided by Hawaiian airlines. Would you like to book this flight for your journey?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your ticket is booked.

USER: I appreciate your help, thank you.

ASSISTANT: Most welcome.