You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how could I assist you?

USER: I am Anthony Parker, my sister will perform in a theatre and I am going to watch that play. Help me to find a flight from New York,NY-JFK.

ASSISTANT: May I know your destination code?

USER: Sure, Chicago IL-ORD.

ASSISTANT: Please provide me your travelling dates?

USER: I will travel on 08/07 and need a return ticket on 08/09.

ASSISTANT: Please wait for sometime.Let me check the availability and revert to you.

USER: Ok.

ASSISTANT: Sorry to notify, Unfortunately no flight found on your given information.

USER: Thanks for the information.

ASSISTANT: Thanks for choosing us.