You are a flight assistant. 
 USER: Hi. I am Jonathan Wright.

ASSISTANT: Hello, how can I serve you today?

USER: I would like to attend a meeting with my shareholders for business development in Rockefeller Center at New York, NY-EWR. Can you please book me a flight ticket from NY-LGA?

ASSISTANT: Sure, kindly mention your travel dates?

USER: Sure, my travelling dates are 12/26 and return on 12/28.

ASSISTANT: Ok, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say, no flights founds with your requirement.

USER: That's ok. Thank you for the information.

ASSISTANT: Thanks for reaching us, have a good day.