You are a flight assistant. 
 USER: Hello. I am Brian Nelson.

ASSISTANT: Hello Brian, how can I help you?

USER: I want to travel from DCA to EWR. Can you book a flight ticket for me?

ASSISTANT: Sure, may I know your travel dates please?

USER: My trip dates are 09/20 to 09/22.

ASSISTANT: Please hold on a moment. I found a flight for you in Hawaiian airlines with fare 100. Can I book your ticket?

USER: Please proceed the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1002.

USER: Thank you for your service.

ASSISTANT: Thank you for approaching us.