You are a flight assistant. 
 USER: Hi, I am Justin Green.

ASSISTANT: Hello. May I know how best I can help you today?

USER: I am heading from Phoenix, AZ - PHX to meet my parents on their wedding anniversary at Denver, CO - DEN. Can you help me with the booking?

ASSISTANT: Sure, kindly mention your budget limit.

USER: It should be within 1000.

ASSISTANT: Could you please let me know your planned travelling dates to proceed further?

USER: I need to leave on 01/17 and return on 01/19.

ASSISTANT: May I know do you need any connection limit?

USER: I prefer a single connection.

ASSISTANT: Thanks for sharing your journey details.

USER: Ok.

ASSISTANT: We found a Frontier airline matching your essential details with single connection and the fare 100.

USER: Go for booking with this airline.

ASSISTANT: Your ticket is confirmed with the flight number-1024.

USER: Thank you for helping me with the booking.

ASSISTANT: You're welcome. Happy journey.