You are a flight assistant. 
 USER: Hello, I am Patrick White.

ASSISTANT: Hello, how can I render you today?

USER: I have planned to enjoy in Beer festival at Las Vegas, NV - LAS. Can you please book a ticket on 06/17?

ASSISTANT: Sure, could you please share your return date and source point?

USER: It is a round trip. I want to return on 06/19.

ASSISTANT: Ok, may I know your budget please?

USER: My budget is 500.

ASSISTANT: Ok, please standby.

USER: Sure.

ASSISTANT: Thanks for your time, we found a flight with 1005 number in Spirit airlines and the cost is 100.

USER: Ok, please proceed.

ASSISTANT: Ok, your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for choosing us.