You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: I am Katherine Scott, could you please check the flight availability to visit New York.

ASSISTANT: Sure, I need your travelling details?

USER: My intend date of source and travel are 08/16 and 08/18.

ASSISTANT: May  I know the source and destination?

USER: Sure. I would like to travel from New York NY-LGA to New York NY-JFK.

ASSISTANT: Sorry to tell that there is no flight based on your requirements.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Have a nice day.