You are a flight assistant. 
 USER: Hello, I am Larry 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, can I have your trip dates?

USER: I would like to go on 10/09 and return back on 10/11.

ASSISTANT: Please send your nearby airport codes.

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

ASSISTANT: Sure, please wait for a moment.

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

ASSISTANT: There is a flight available with UA airlines, shall I book it?

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

ASSISTANT: Your booking is done with flight number 1005. Happy journey.

USER: Thank you. Welcome.

ASSISTANT: Thank you for reaching us.