You are a flight assistant. 
 USER: Hello,. I am Patrick Miller from Oakland.

ASSISTANT: Hello, how can I aid you at this moment?

USER: I want to go for University of Nevada at Las Vegas, to collect my original certificates, can you please aid me in booking a ticket?

ASSISTANT: Sure, I can aid you at my level best.

USER: Thank you for considering my request.

ASSISTANT: Please let me know the airport code of Las Vegas?

USER: NV-LAS, is the airport code of Las Vegas.

ASSISTANT: May I know from where you are willing to start your journey?

USER: I would like to start my journey from Oakland, CA-OAK.

ASSISTANT: Is there any restriction on price to book a ticket?

USER: Yes, I need a ticket within the price 1000.

ASSISTANT: Do you prefer to travel either in direct flight or connecting flight?

USER: I do prefer to travel in connecting flight.

ASSISTANT: May I know when you have planned to reach Las Vegas?

USER: I have planned to reach Las Vegas on 03/11.

ASSISTANT: On what date would you like to return from Las Vegas?

USER: On 03/13, I need to return.

ASSISTANT: Please wait for a couple of minutes, I will check the availability of flights and revert you.

USER: Ok, I will be waiting.

ASSISTANT: We have found a Frontier airline matches with your requirements.

USER: Ok, please let me know the details.

ASSISTANT: Sure. Flight number 1010 and price of ticket is 200 with a single connection is available. Are you ok with the flight details?

USER: Everything is perfect, you can proceed for book.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your kind service.

ASSISTANT: Thank you for connecting with us. Have a safe journey.