You are a flight assistant. 
 USER: Hello. My name is Samuel Nelson.

ASSISTANT: Hello. How may I guide you?

USER: I want to book a flight ticket on dates from 03/27 to 03/29.

ASSISTANT: Ok, can I know your source and destination airport codes?

USER: As it is a round trip, I would like to travel from DEN to DEN.

ASSISTANT: Please hold on for a moment, let me check.

USER: Ok, please check.

ASSISTANT: I found a flight 1008 which matches with your preferences, can I proceed?

USER: Yes, please confirm the ticket.

ASSISTANT: Your ticket is booked with Southwest airlines.

USER: Thank you for your response.

ASSISTANT: Thank you, have a good day.