You are a flight assistant. 
 USER: Hello, I'm David Smith.

ASSISTANT: Hello, what help you are looking for?

USER: This year, I would like to buy a new home in Phoenix, so could you please book a ticket?

ASSISTANT: Sure, kindly share your nearest airport codes.

USER: My airport codes are DEN and PHX.

ASSISTANT: Please share the dates which you are willing to travel.

USER: I would like to travel on 08/21 and return back on 08/23.

ASSISTANT: Please hold on for a moment.

USER: Ok sure, take your time.

ASSISTANT: Southwest airlines is providing service in route with price 100, shall I proceed?

USER: Ok, please proceed if the connection limit is 1.

ASSISTANT: Ok. Your ticket is confirmed, flight number is 1006.

USER: Thank you.

ASSISTANT: Welcome, thank you for reaching us.