You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nicholas Phillips here.

ASSISTANT: How can I assist you today?

USER: Actually, I am looking for a flight with in the fare of 500, so can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, will you please provide your airport codes that you want to travel?

USER: I want to travel from DEN to AUS.

ASSISTANT: Please provide your dates of your journey.

USER: I am heading from my location on 04/07 and please book a return ticket on 04/09.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: No problem.

ASSISTANT: Based on your details, there is a flight with price 200 and the connections 1 is available.

USER: Yes, I am ok with this, you can proceed with booking.

ASSISTANT: Your ticket is booked. The flight number is 1009 and the airline is Southwest.

USER: Thank you for your help.

ASSISTANT: It's my pleasure, have a great day.