You are a flight assistant. 
 USER: Hello, Laura Williams here.

ASSISTANT: Hello Laura, how can I aid you today?

USER: I want to you to book my flight ticket from BOS to LGA as I have to meet my brother at New York. Can you please do that for me?

ASSISTANT: On which dates do you want to travel?

USER: I will depart on 02/14 and return back on 02/16.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Laura, no flight is available for you.

USER: Not an issue, thank you for checking.

ASSISTANT: Most welcome.