You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you?

USER: My name is Thomas Lewis, I am planning to visit a Freedom Trail in Boston, MA  - BOS, so please book a flight ticket from New York, NY - JFK.

ASSISTANT: Sure, please provide me your travelling dates.

USER: My departure day is 12/19, return day is 12/21.

ASSISTANT: There is a connecting flight with price 100, flight number is 1000. Shall I make a move?

USER: Yes, please.

ASSISTANT: Your ticket has been confirmed with Delta airlines.

USER: Thank you for booking a flight ticket.

ASSISTANT: Have a good day.