You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: My name is Sarah Wright. I need to book a flight ticket from IAD to AUS. Please help me in booking a flight ticket.

ASSISTANT: Sure, can you share your trip dates?

USER: My trip dates are from 06/05 to 06/07.

ASSISTANT: Do you have any preferences?

USER: I am comfortable with business class.

ASSISTANT: There is a connecting flight with number 1002 in airline Frontier, the fare is 500 in business class. Can I book it?

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.