You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Joshua Lopez.

ASSISTANT: Lopez, how may I aid you?

USER: I am planning to attend music concert at AUS, can you please help me with booking a flight ticket from LGA?

ASSISTANT: Sure, may I know your trip dates?

USER: Sure, I would like to take off on 11/18 and return back on 11/20.

ASSISTANT: Please hold on for a while, let me check for a best flight on your route.

USER: Ok, but please make sure that the price limit does not exceed 1000.

ASSISTANT: Delta airlines with flight 1019 is available.

USER: Yes, please proceed with the booking.

ASSISTANT: Your ticket is confirmed.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for choosing us.