You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am looking for a flight from Boston, BOS to New York, LGA. Can you please help me with booking a flight ticket?

ASSISTANT: Sure, please share your itinerary dates.

USER: My itinerary dates are Feb 15 and Feb 17.

ASSISTANT: May I know your connection limit?

USER: I need a flight with single connection limit.

ASSISTANT: Do you have any other preferences?

USER: Yes, my return time should be in the evening.

ASSISTANT: May I know your name?

USER: My name is Dorothy Young.

ASSISTANT: Please hold on for a while.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry Dorothy Young, no flight is available from New York in the evening.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for reaching us.