You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how best can I guide you today?

USER: Can you please help me to book a flight on Feb 18th to reach Phoenix?

ASSISTANT: Sure, please forward your source and destination airport codes?

USER: Sure, my airport codes are DFW - PHX.

ASSISTANT: When are you planning to return on?

USER: I intend to return on 20th of the same month.

ASSISTANT: Do you need a connecting flight?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: Can I know your good name?

USER: Sure, I am Dorothy Thomas.

ASSISTANT: Thank you for your details, we found a connecting flight 1004 in class economy which is in Southwest airline. Shall I proceed?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thank you.