You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Dorothy Campbell. I would like to book a ticket to Washington, can you please help me out in booking?

ASSISTANT: Sure, I am here to help you. Can you please help me with your journey dates to search a flight?

USER: I am travelling on these dates 03/17 and 03/19.

ASSISTANT: May I know your airport codes?

USER: I am flying from IAD to AUS.

ASSISTANT: Do you have any other requirements?

USER: I am preferring connection limit 1.

ASSISTANT: There is a flight -1000 of AA airlines, shall I proceed?

USER: Ok, you can proceed with this flight.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your services.

ASSISTANT: Welcome.