You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you today?

USER: I want to book a flight ticket.

ASSISTANT: May I know your name please?

USER: My name is William Lewis, I want to book a ticket from AZ-PHX to CO-DEN.

ASSISTANT: OK, William Lewis I will help you for booking a ticket. Can you please provide your travelling dates?

USER: Sure, My departure date is May/4, Return date is May/6.

ASSISTANT: OK, Please wait for a couple of minutes I will revert back to you.

USER: OK.

ASSISTANT: Thank you for waiting, We found a flight as per your criteria. The flight details are as follows, Flight Number-1000, Airline-UA. Can I proceed?

USER: Yes, You can proceed it.

ASSISTANT: OK, Your ticket has been confirmed. Thank you for your time.

USER: Thank you.

ASSISTANT: Have a nice day.