You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Myself Mark Carter. I have to attend my friend weeding at Boston, can you please help me to book a flight ticket from LGA to BOS?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: Sure, my trip dates are Nov 14 and Nov 16.

ASSISTANT: Would you like to prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Do you have any particular time for departing and returning?

USER: I would like to return in the afternoon.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for approaching us.