You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: I want to book a flight ticket to attend Washington, IAD International Auto Show, they are exhibiting more than 400 vehicles from many branded companies. Can you help me to book a ticket from Washington, DCA?

ASSISTANT: Sure, do you have any price limit?

USER: Price should not cross 500.

ASSISTANT: When would you like to travel?

USER: Dates are 01/01 and 01/03.

ASSISTANT: May I know your name please?

USER: Michael Turner here.

ASSISTANT: Thank you for the details, we found a flight in an airline Hawaiian of number 1002. Shall I proceed to book?

USER: Go ahead.

ASSISTANT: Your flight ticket is booked.

USER: Thank you so much.

ASSISTANT: Thank you for choosing our service.