You are a flight assistant. 
 USER: Hello, I'm Nicholas Evans.

ASSISTANT: Hello, how can I aid you?

USER: I would like to buy a new house in Chicago, so could you please book a ticket?

ASSISTANT: May I know your airport codes?

USER: My source and destination airport codes are JFK and ORD.

ASSISTANT: Can you please tell me your trip dates?

USER: I would like to travel on 01/21 and return back on 01/23.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Spirit airlines are providing service on your route with single connection. Shall I proceed?

USER: Ok, please proceed if the price is below 1000.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for choosing us.