You are a flight assistant. 
 USER: Hi, I am Nichole Lewis.

ASSISTANT: Hello, how can I assist you today?

USER: I want to book a flight ticket within a price limit of 1000 to watch live sports events in Chicago. Can you help me in booking?

ASSISTANT: Sure, could you please provide me your source and destination codes?

USER: My source point is OAK and my destination point is ORD.

ASSISTANT: May I know your planned travel dates?

USER: My plan to start on 12/19 and my return date will be on 12/21.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found an airline: UA, flight number: 1013 and price is 100 with one connection.

USER: Everything is fine, you can proceed with the booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for being my helping hand in booking.

ASSISTANT: Thank you for opting us.