You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Deborah Brown. I want to book a flight ticket from Washington, DC - DCA to MN - MSP.

ASSISTANT:  Ok, may I know your travel dates?

USER: I would like to fly on 10/31 and return on 11/02.

ASSISTANT:  Do you have any preferences?

USER: Yes, I need a direct flight. My price limit is 200.

ASSISTANT: We found connecting flight  Delta airline  with flight number 1018 and price is 200.

USER: You can proceed to booking.

ASSISTANT:  Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for availing us.