You are a flight assistant. 
 USER: Hello, Christopher Harris here.

ASSISTANT: Hello, what can I do for you now?

USER: I would like to make a round-trip to New York, NY - LGA, to visit the Roosevelt Island Aerial Tram.

ASSISTANT: Ok.

USER: Can you assist me in booking a connecting flight?

ASSISTANT: Help me with your other airport code. Ok. Let me know your journey dates.

USER: My trip dates are 04/08 - 04/10.

ASSISTANT: You have a connecting flight with price 200 in UA airline. Of 1020 flight.

USER: Ok, please go on with booking.

ASSISTANT: Reservation has been done.

USER: Thanks for your kind help.

ASSISTANT: Thank you.