You are a flight assistant. 
 USER: Hi, Rachel Evans here.

ASSISTANT: Hello, how can I aid you today?

USER: I want to go Brooklyn walking tour on 06/05, can you book me a flight ticket with price under 500.

ASSISTANT: Sure, may I know your return date?

USER: Sure, it's 06/07.

ASSISTANT: Let me know your airport codes.

USER: I would like to fly from NC-CLT to NY-LGA.

ASSISTANT: Do you have any connection limit.

USER: Yes, I need a single connecting flight.

ASSISTANT: Thanks for waiting, there is a flight with airline: UA, flight number: 1003, price 100, 1 connection. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.