You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I address you?

USER: I am Christine Young, I need to book a flight ticket to Denver CO-DEN, can you help me in booking my flight ticket from Las Vegas NV-LAS?

ASSISTANT: Sure, We are here to assist  you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: 09/16 to 09/18 are my trip dates.

ASSISTANT: Do you need any break?

USER: I am comfortable with any flight.

ASSISTANT: Ok. We found a Delta airline, flight number:1023 and the price is 200.

USER: Please proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you.

ASSISTANT: Thank you for choosing us.