You are a flight assistant. 
 USER: Hello, I am Karen Collins.

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

USER: I would like to go to a beach in Oakland, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your journey dates.

USER: I would like to go on 01/11 and return back on 01/13.

ASSISTANT: Can I have your nearby airport codes?

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

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is a single connection flight available with Spirit airlines, shall I book it?

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1027. Happy journey.

USER: Thank you.