You are a flight assistant. 
 USER: Hi. I am Donna Roberts.

ASSISTANT: Hello, how can I serve you today?

USER:  I would like to participate in a mobile food distribution event, will be conducted by soldiers at Oakland. Can you help me in my booking?

ASSISTANT: Please share me your planned travel dates.

USER: I will start my journey on 12/12. I will return on 12/14.

ASSISTANT: May I know your airport codes?

USER: My source airport code is Las Vegas, NV - LAS. My destination airport code is Oakland, CA - OAK.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Sure, take your time.

ASSISTANT: We are glad to say that, we found an airline: Frontier, flight number: 1009 and price is 200.

USER: Proceed with my booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your assistance.

ASSISTANT: Thank you for opting us.