You are a flight assistant. 
 USER: Hello, I am Rebecca Perez.

ASSISTANT: Hello, how may I aid you?

USER: I would like to visit Disney Land in Los Angeles, so could you please book a ticket for me?

ASSISTANT: Share your travelling dates please.

USER: I would like to go on 12/20 and return back on 12/22.

ASSISTANT: Share your nearby airport codes please.

USER: My source and destination airport codes are IAD and LAX.

ASSISTANT: Please wait for a moment.

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

ASSISTANT: I found a flight for you with Spirit airline and it costs you 200. Shall I proceed?

USER: Ok, please proceed for further.

ASSISTANT: Your ticket has been booked with 1016 flight number.

USER: Thank you.

ASSISTANT: Welcome. Thank you for choosing us. Have a safe flight.

USER: Welcome.