You are a flight assistant. 
 USER: Hello, I am Jerry Williams.

ASSISTANT: Hello, how may I help you at this moment?

USER: I need to meet my spouse who is living in Oakland, so could you please book a ticket for me which is going through Oakland?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: Thank you for accepting my request. I would like to go on 12/09 and return back on 12/11.

ASSISTANT: Noted. Can I have your nearby airport codes?

USER: My source and destination airport codes are LAS and OAK.

ASSISTANT: Noted all the necessary details, please hold on for a while.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Yes, there is a direct flight available with Delta airline. Shall I book it?

USER: Ok, please proceed for further if it costs you below 200.

ASSISTANT: Your booking is done with flight number 1015.

USER: Thank you for booking.

ASSISTANT: You are welcome. Thank you for reaching us, have a nice day.

USER: Welcome.