You are a flight assistant. 
 USER: Hello. I am Scott Lee.

ASSISTANT: Hello, how can I provide assistance to you?

USER: To attend the U.S. Open Golf Championship on 11/17, I want to book a ticket.

ASSISTANT: Ok.

USER: Would you assist me in booking under the price limit of 200?

ASSISTANT: Sure, Can I have your trip airport codes?

USER: Source:  Atlanta, ATL. My destination is at Austin, AUS.

ASSISTANT: Let me know your return date of journey.

USER: Return date is on 11/19.

ASSISTANT: Please give me a minute, I will check the availability of flights and let you know.

USER: Sure.

ASSISTANT: The details of available flight is Delta airline, flight number 1002 with fare 100 and a lay by.

USER: Ok, proceed with booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your helping hand in booking a ticket.

ASSISTANT: Thank you for opting us.