You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Joshua Brown here.

ASSISTANT: How can I assist you today?

USER: I would like to visit Denver for a business trip, so can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, please mention your airport codes.

USER: Sure, I want to travel from PHX to DEN.

ASSISTANT: Please mention your travelling dates.

USER: Sure, my boarding is on 09/10 and please book a return ticket on 09/12.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: There is a flight with price 100 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 1016 and the airline is UA.

USER: Thank you for your assistance, have a nice day.

ASSISTANT: Welcome, have a great day.