You are a flight assistant. 
 USER: Hello, I am Carolyn Allen.

ASSISTANT: Hello. How may I assist you?

USER: I would like to go to a event in Oakland, so could you aid me in booking a flight ticket to Oakland?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you. I would like to go on Dec 22nd and return back on Dec 24th.

ASSISTANT: May I know your airport codes please?

USER: My source and destination airport codes are SFO and OAK respectively.

ASSISTANT: How much you can afford for airfare?

USER: I can afford up to 500.

ASSISTANT: Do you need any connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT: AA airlines is available in your route with the ticket fare of 300, shall I proceed with the booking?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket is booked with the flight-1000.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.