You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you at this moment?

USER: Myself Nicholas Mitchell. I want to book a flight ticket to attend the International Auto Show, as they are exhibiting more than 400 vehicles from many branded companies.

ASSISTANT: Sure, let me know your journey dates.

USER: Departure date is on 05/22. And I would like to return from San Francisco on 05/24.

ASSISTANT: Ok, may I know your selected airport codes?

USER: Selected airport codes are Austin, AUS and SFO.

ASSISTANT: Ok, wait for a couple of minutes.

USER: Sure.

ASSISTANT: Thanks for your time, we found a connecting flight with a fare of 200 in 1027 UA airline.

USER: Reserve it.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Thank you for picking us.