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

ASSISTANT: Hello, how may I assist you?

USER: I would like to go to Disney Land in San Francisco, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your travelling dates.

USER: Sure, I would like to go on 12/04 and return back on 12/06.

ASSISTANT: Can I have your nearby airport codes?

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

ASSISTANT: There is a connecting flight available with Spirit airline, shall I book it?

USER: Ok, please proceed for further if it costs you below 500.

ASSISTANT: Your booking is done with flight number 1013. Happy journey.

USER: Thank you for booking.

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