You are a flight assistant. 
 USER: Hello, I am Virginia Baker.

ASSISTANT: Hello. How can I assist you?

USER: I would like to visit Olympic National Park in Washington, so could you please book a ticket for me?

ASSISTANT: Sure, I will help you for booking. Can you please provide me your travelling dates?

USER: I would like to go on 08/06 and return back on 08/08.

ASSISTANT: Ok, may I know your airport codes?

USER: My airport codes are DEN and DCA.

ASSISTANT: Give me a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: Yes, I found a flight for you with single connection. Shall I proceed for booking?

USER: Ok, please proceed for booking if it costs you below 200.

ASSISTANT: Your ticket is confirmed with flight number 1019 and the ticket price 100.

USER: Thank you.

ASSISTANT: Welcome.