You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Barbara Perez.

ASSISTANT: How can I assist you?

USER: Please book a flight ticket on dates 12/21 and 12/23.

ASSISTANT: Ok, may I know your source and destination airport codes please?

USER: My airport codes are OAK and SFO.

ASSISTANT: Ok, do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for a while. JetBlue airlines is providing a flight on that route with ticket fare of 200 and 1 connection, shall I proceed for booking?

USER: Yes, please.

ASSISTANT: I have successfully booked your ticket with flight-1015, have a safe journey.

USER:   Thank you.

ASSISTANT: Thank you for choosing us.