You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Karen Miller, I want to book a flight with one connection to visit my friend at New York. Can you book a flight under fare of 500?

ASSISTANT: Sure, may I know your travel dates?

USER: I will travel on 09/25 and return on 09/27.

ASSISTANT: Please share me your airport codes.

USER: My source point is IL-ORD and destination is NY-LGA.

ASSISTANT: Do you have any other specification?

USER: No.

ASSISTANT: We found a flight on your details with airline Hawaiian, flight number: 1021. Shall I proceed for booking?

USER: Sure, you can.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your service.

ASSISTANT: Thanks for choosing us.