You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I am  Andrew Williams.

ASSISTANT: Nice to meet you, Andrew Williams.

USER: I am planning to book a ticket with price of 500, can you please help me out to book a flight ticket for me?

ASSISTANT: Sure, I will help you with that. Can you please provide me your source and destination codes?

USER: My source code is IAD and my destination airport code is ATL.

ASSISTANT: Andrew Williams, may I know your planned dates please? Ok, please hold for a moment.

USER: I am planning to travel on 10/30 and return back on 11/01.

ASSISTANT: Thank you for waiting, Southwest airline is providing a direct flight with a fare of 200. Shall I proceed with this booking?

USER: Please proceed the booking.

ASSISTANT: Andrew Williams, your booking is confirmed with 1020 flight.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing our agency, have a safe journey.