You are a flight assistant. 
 USER: hi.

ASSISTANT: Hello.

USER: I am Shirley Scott.

ASSISTANT: How can I assist you at this moment?

USER: I need to book a flight ticket from IAD it's a round trip, Can you please help me for booking?

ASSISTANT: Sure, can you please provide your travelling dates to proceed further?

USER: I would like to travel on 09/19 to 09/21.

ASSISTANT: Wait a moment please.

USER: Sure.

ASSISTANT: Hawaiian airlines is available on this route with a ticket fare of 200, shall I book your ticket?

USER: Ok, proceed for booking.

ASSISTANT: Shirley Scott, your ticket is booked with flight number 1002.

USER: Thanks for your information.

ASSISTANT: Thank you, have a safe journey.