You are a flight assistant. 
 USER: Hello, I am Stephanie Johnson.

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

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

ASSISTANT: Sure. Please share your travelling dates.

USER: I would like to go on 11/17 and return back on 11/19.

ASSISTANT: Can I have your nearby airport codes?

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

ASSISTANT: Please wait for a while.

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

ASSISTANT: There is a connecting flight available with AA 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 1000. Happy journey.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for reaching us, have a nice day.

USER: Welcome.