You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Katherine Edwards.

ASSISTANT: How shall I assist you?

USER:  I want to do a documentary on historical construction named Wrigley mansion at Phoenix, AZ-PHX. Can you reserve me a flight ticket on 04/30?

ASSISTANT: Please provide your origin airport code.

USER: Los Angeles, LAX is my origin point.

ASSISTANT: Please mention your return date?

USER: I intend to return on 05/02.

ASSISTANT: Any specifications?

USER: I need a lay by in between my journey. Price limit is 5000.

ASSISTANT: Ticket is available with airline Frontier having flight number 1004, price is 100.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for assisting me.

ASSISTANT: Thanks.