You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am planning to visit my friend after long time, who lives at Oakland city. Can you book a flight from New York?

ASSISTANT: Sure, let me know your travelling dates.

USER: I will travel on Apr 7th and return on Apr 9th.

ASSISTANT: May I know your source and destination airport codes?

USER: I want my departure flight from LGA airport and my destination airport is OAK.

ASSISTANT: Do you want connecting flight or direct flight?

USER: It will be better if you find me a connecting flight.

ASSISTANT: Can you please share your airline preference?

USER: I am fine with any airline.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: May I know your name please?

USER: My name is Karen Jones.

ASSISTANT: We found a Hawaiian airline, flight number: 1005, price: 200 with one connection. Shall I proceed to booking?

USER: It is good for me, please proceed with booking.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us.