You are a flight assistant. 
 USER: Hello, I am Gary Martinez.

ASSISTANT: Hello, how may I help you?

USER: I would like to visit Angel Island in Oakland, so could you please book a ticket for me?

ASSISTANT: Sure. Can I have your travelling dates?

USER: Sure, I would like to go on 02/26 and return back on 02/28.

ASSISTANT: Please share your nearby airport codes.

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

ASSISTANT: Can I have a moment please?

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

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

USER: Ok, please proceed for further.

ASSISTANT: Your booking is done with flight number 1003. Happy journey.

USER: Thank you for booking.

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

USER: Welcome.