You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I abet you?

USER: I am Mark Adams, want to attend for music competition at Philadelphia, PHL.

ASSISTANT: Ok.

USER: Can you please book  a flight ticket with in the price range of 500?

ASSISTANT: Sure. May I know your origin airport code?

USER: I want to fly from Oakland, OAK.

ASSISTANT: Please, let me know your journey dates.

USER: My journey will start on 07/02. I intend to return on 07/04.

ASSISTANT: Just a minute, I will check the flight availability and let you know.

USER: Sure.

ASSISTANT: There is a flight available in Hawaiian airline with price 200 and single connection.

USER: It's perfect, you can confirm this flight.

ASSISTANT: Your ticket has been confirmed with flight number 1011.

USER: Thank you for your great response.

ASSISTANT: Thank you for approaching us.