You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Daniel Phillips want to visit Las Vegas, can you book a ticket within the fare of 500?

ASSISTANT: Sure, I am here to help you. Could you please share your journey dates to search a flight?

USER: Sure, my travelling dates will be 05/08 and 05/10.

ASSISTANT: Let me know your preferable airport codes?

USER: Ok, I want to fly from OAK to LAS.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: There is a flight-1024 of Spirit airlines, shall I proceed with booking?

USER: Yes, proceed.

ASSISTANT: Ok, your reservation is done.

USER: Thank you.

ASSISTANT: Welcome, have a nice journey.