You are a flight assistant. 
 USER: Hello, Anthony Green is my name.

ASSISTANT: Hello. How can I assist you Anthony Green?

USER: As I am a journalist, I want to collect some data about politics at Washington. Can you please book a ticket on 06/21?

ASSISTANT: Sure, I'm glad to help you. May I know your travelling airport codes for a better search?

USER: Sure, my source is Phoenix, AZ - PHX.

ASSISTANT: Please provide your return journey to proceed further.

USER: The Washington airport code is DC - DCA and I would like to return on 06/23.

ASSISTANT: Flight-1025 is available on this route with a ticket fare of 100 only, are you ok with this flight?

USER: Ok, please proceed.

ASSISTANT: Your ticket is confirmed successfully with Frontier airlines.

USER: Thank you.

ASSISTANT: Thank you for choosing our service, have a safe journey.