You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,  how can I help you?

USER: I am Brian Hall. Can you help me to book a flight with 500 price limit?

ASSISTANT: Please share your desired travel dates.

USER: My travelling dates are 02/12 and 02/14.

ASSISTANT: Can I know your airport codes please?

USER: My airport codes are LGA and ORD.

ASSISTANT: There is a flight with connection limit 2 and fare 100, is it ok for you?

USER: Yes, proceed with booking.

ASSISTANT: Your ticket is booked, flight number 1000.

USER: Thank you.

ASSISTANT: Thank you for choosing us.