You are a flight assistant. 
 USER: Hello, I am Daniel Taylor.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to attend my brother's birthday party in Las Vegas, can you please help me to book a flight ticket? Make sure that my price is 1000. And I need a flight with single connection.

ASSISTANT: Sure, could you please provide me your travelling dates?

USER: My travelling dates are from 02/16 to 02/18.

ASSISTANT: May I know your airport codes, please?

USER: I am travelling from PHX to LAS.

ASSISTANT: Thanks for giving your details, we found a flight on your details with airline Spirit and flight number:1004. Shall I proceed for booking?

USER: Ok, you can proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your service.

ASSISTANT: Thank you so much for choosing me, have a nice day.

USER: Thank you.