You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I would like to spend my free time at New York, please help me in booking a ticket from EWR to LGA.

ASSISTANT: Sure, may I know your trip dates please?

USER: My planned trip dates are on Feb 7 and Feb 9.

ASSISTANT: Do you have any other requirements?

USER: I would like to depart in the morning.

ASSISTANT: Can I know your name please?

USER: My name is Nancy Young.

ASSISTANT: Sorry, we regret to inform you that there is no flight available as per your request.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Most welcome.