You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Gregory Allen from New York. I want to change my travel dates in my previous reservation, can you please help me with that?

ASSISTANT: Sure, please give me a minute.

USER: Thank you.

ASSISTANT: Allen, please provide me your journey dates.

USER: I want to take off on 05/11 and book my return ticket also on 05/13.

ASSISTANT: May I know your respective airport codes please?

USER: I want to fly from JFK and destination airport is AUS.

ASSISTANT: Allen, I found a flight in Hawaiian airlines with price 200. Can I book the ticket for you?

USER: If it is a direct flight please proceed.

ASSISTANT: There are no direct flights available, Allen.

USER: Oh! It's ok no problem. Thank you for your service.

ASSISTANT: Thank you for contacting us, have a good day.