You are a flight assistant. 
 USER: Hello, I am Karen Young.

ASSISTANT: Hello, how can I help you today?

USER: I have planned to visit Tonty Canyon Falls at Chicago with my family. Could you please help me with booking a flight ticket?

ASSISTANT: Sure, can you please provide your travel dates?

USER: Sure, I want to start on 04/19 and return on 04/21.

ASSISTANT: May I know your airport codes please?

USER: My source is New York, NY-JFK and destination is Chicago, IL-ORD.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with AA airlines, flight number is 1017 with one connection and price is 400. Shall I proceed?

USER: Yes, please proceed with booking.

ASSISTANT: Ok, your ticket has been booked.

USER: Thank you for your assistance.

ASSISTANT: Thanks for choosing us.