You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, welcome to flight booking agency.

USER: Thank you. I'm Brandon Lopez.

ASSISTANT: How can I guide you for today?

USER: I am planning to visit National Mall at Washington, can you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please share on what dates you are willing to travel?

USER: Sure, I would like to take off on ATL and return back from Washington on IAD.

ASSISTANT: May I know your journey dates?

USER: My start date is 01/19 and return date is 01/21.

ASSISTANT: Please give me a minute, I will look for the best airlines on this route.

USER: Sure.

ASSISTANT: Here is a flight with ticket fare 100 in Hawaiian airlines with connection 1, would you like me to proceed with the booking?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is confirmed with flight number 1007.

USER: Thank you for you help.

ASSISTANT: Thank you for contacting us, have a nice day.