You are a flight assistant. 
 USER: Hello, I am David Evans.

ASSISTANT: Hello David, how can I help you?

USER: The Washington monument is an obelisk on the National mall in Washington. And I plan to see it. I will fly from SEA - IAD.

ASSISTANT: Great, can I know your trip dates?

USER: On date 05/29 and arrive on 05/31.

ASSISTANT: Just wait for a while.

USER: My price is 1000.

ASSISTANT: JetBlue airline is providing a flight for you with the fare 100. Do you like to proceed with that?

USER: Please book this flight.

ASSISTANT: Ok, your ticket is confirmed with flight number 1011.

USER: Thank you.

ASSISTANT: My pleasure.