You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I'm Carolyn Garcia.

ASSISTANT: How may I help you?

USER: I am planning to attend music concert at PHL, can you please help me with booking a flight ticket from LAS?

ASSISTANT: Sure, can you please provide your journey dates?

USER: Sure, I would like to take off on 11/30 and return back on 12/02.

ASSISTANT: Ok, please wait a moment.

USER: Ok, but please make sure that the price limit does not exceed 500.

ASSISTANT: Thank you for your waiting, I found a flight for you in Spirit airlines with fare 400. Can I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1008.

USER: I appreciate your help, thank you.

ASSISTANT: Thank you for approaching us.