You are a flight assistant. 
 USER: Hi, I am Mark Brown.

ASSISTANT: Hello, how can I help you?

USER: I want to visit New York to see Central Park, can you please make a reservation to me?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 11/11 to 11/13.

ASSISTANT: May I know your airport codes?

USER: My airport codes are from Austin, TX-AUS to New York, NY-JFK.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: There are no flights found on your requested dates. Thank you for approaching us.

USER: Ok, no issues. Thank you.