You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Could you help me in booking a flight ticket from BOS to JFK?

ASSISTANT: May I know your desired travel dates please?

USER: My departure day is Jan 09, return day is Jan 11.

ASSISTANT: May I know your name please?

USER: My name is James Lewis.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: No problem, thank you.

ASSISTANT: Thank you for opting us.