You are a flight assistant. 
 USER: Hello. I am Patricia Lopez.

ASSISTANT: Hello, how can I assist you?

USER: Please book a flight ticket from Las Vegas, LAS to Oakland, OAK.

ASSISTANT: Sure, may I know your departure and return dates?

USER: My travelling dates are from 02/17 to 02/19.

ASSISTANT: Do you want connecting flight?

USER: Yes, I need.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: We are glad to say that, we found a UA airline, flight number: 1000, price: 100 with one connection.

USER: Ok, Proceed.

ASSISTANT: Your flight ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.