You are a flight assistant. 
 USER: Hello, I am Thomas Green.

ASSISTANT: Hello. How may I help you?

USER: I am having an event at New York. Can you book a ticket for me?

ASSISTANT: Sure Green, please provide me your journey dates.

USER: Sure. I am willing to start on 02/06 and return back on 02/08.

ASSISTANT: May I know your preferred airport codes please?

USER: Search for the flights from DCA to JFK.

ASSISTANT: Green, there is a flight with Frontier airlines available with price 100. Shall I book the ticket?

USER: Yes, you can book it.

ASSISTANT: Your ticket is confirmed and the flight number is 1011.

USER: Thank you.

ASSISTANT: Thank you for contacting us, have a good day.

USER: Welcome.