You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I need to book a flight ticket from BOS to JFK, Can you please help me for booking?

ASSISTANT: Sure, can you please share your travel dates?

USER: I would like to travel on 07/15 to return on 07/17.

ASSISTANT: May I know your connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other requirement that you are looking for?

USER: I am comfortable with business class.

ASSISTANT: May I know your name to proceed further?

USER: Margaret Young here.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thank you for contacting us.