You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am planning to visit a Times Square in New York, so please book a flight ticket from BOS to JFK.

ASSISTANT: Your travelling dates please?

USER: My departure day is Feb 12, return day is Feb 14.

ASSISTANT: May I know your connection limit please?

USER: I want a flight with one connection.

ASSISTANT: Do you have any other specifications?

USER: My depart time should be evening.

ASSISTANT: May I know your name please?

USER: My name is Carol Hernandez.

ASSISTANT: I am sorry no flights found on your route.

USER: No problem, thank you.

ASSISTANT: Thank you for choosing us.