You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Shirley Clark. I am planning to book a ticket to meet my family at PHX. Can you please help me out to book a ticket from LAS?

ASSISTANT: Can you please let me know your preferred planned dates to search a flight?

USER: I would like to travel on 01/31 and return back on 02/02.

ASSISTANT: May I know your price limit?

USER: My price limit is 1000.

ASSISTANT: Flight-1003 of Frontier airlines is matches you, shall I proceed?

USER: Yes, you can proceed the booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.