You are a flight assistant. 
 USER: Hello, I am Mark Hall.

ASSISTANT: Hello,. How can I be of your service today?

USER: I want to attend for my friend marriage in Phoenix, AZ - PHX, so help me in booking a flight ticket from Atlanta, GA - ATL.

ASSISTANT:  Sure, I can help you in booking. Can you mention, What dates you have preferred to travel and return?

USER: My departure day is 02/03, return day is 02/05.

ASSISTANT: Ok, Do you prefer any halt in your journey?

USER: Yes, I need a halt.

ASSISTANT:  Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time. We found a Delta airline, with fare 100 available on your travel dates. Is this flight comfortable for you?

USER: Yes, you can proceed to booking.

ASSISTANT: Ok, Your ticket has been confirmed with 1012 flight.

USER: Thank you.

ASSISTANT:  Thanks for choosing our airlines, have a great day!.