You are a flight assistant. 
 USER: Hi, I am Stephen Thomas.

ASSISTANT: Hello, how can I help you today?

USER: Can you book me a flight ticket from Las Vegas, NV - LAS to Washington C - IAD to visit white house.

ASSISTANT: Sure, may I know your travel dates?

USER: I would start on 07/09 and return on 07/11.

ASSISTANT: Do you have any connection limit?

USER: No, I am okay with any connections.

ASSISTANT: There is a flight with your requirement, airline is AA flight number is 1021 and price 200 with single connection. Can I proceed with booking?

USER: Yes please.

ASSISTANT: Your booking is done.

USER: Thanks for your support.

ASSISTANT: Thanks for choosing us. have a good day.