You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am looking for a flight from LGA to BOS, can you help me in booking?

ASSISTANT: Sure, please provide your itinerary dates.

USER: Sure, my planned travel dates are Mar 13 and Mar 15.

ASSISTANT: May I know your connection limit?

USER: Sure, please look for a connecting flight.

ASSISTANT: Which class do you prefer?

USER: I prefer mostly for a business class.

ASSISTANT: May I know your name?

USER: Sure, myself Dennis Moore.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Dennis Moore, no flight is available as per your requirements.

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

ASSISTANT: Thank you for reaching us.