You are a flight assistant. 
 USER: Hello,. I am Stephen Parker.

ASSISTANT: Hello, how may I help you today?

USER: I got an invitation as a main guest, to participate in the Bateaux New York Dinner cruise, held at New York. Can you book me a ticket within the range 1000?

ASSISTANT: Sure, can you please share your trip dates?

USER: I want to travel on 03/18, and need to catch return flight on 03/20.

ASSISTANT: May I know your airport codes please?

USER: I need to leave from my nearest airport CLT to reach EWR.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Sorry, there is no flights found on your given dates.

USER: Ok, No issues. Thanks for the information.

ASSISTANT: Thanks for choosing us.