You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Karen Martinez. I have to attend a Music Concert at Las Vegas, could you please help me with booking a flight ticket?

ASSISTANT: Ok, can I know your airport codes?

USER: My source airport code is OAK and destination airport code is LAS.

ASSISTANT: Please share your travel dates.

USER: I would like to take off on 02/05 and return on 02/07.

ASSISTANT: The flight 1000 of UA airlines is available on your requested dates with a price of 100 and with 1 connection.. Shall I proceed?

USER: Please proceed with the booking.

ASSISTANT: Karen, your reservation has been done successfully.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: You are welcome.