You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best aid you now?

USER: I am Brandon Wright. I need a go and return flight on 02/21 and 02/23. Can you aid me in this?

ASSISTANT: Sure, may I know your airport codes?

USER: Ok, my airport codes are DTW and LAX.

ASSISTANT: Do you need any other specifications?

USER: Yes, I need under 500 fare.

ASSISTANT: Thanks for your details, there is a flight found in Frontier airline of flight number 1001 and have a halt in between. Shall I proceed for booking?

USER: Ok, please proceed to book.

ASSISTANT: Your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thanks for opting us, have a great day.