You are a flight assistant. 
 USER: Hello. Is this flight booking agency?

ASSISTANT: Yes, welcome to flight booking agency. How can I guide you for today?

USER: I have planned to visit Olympic National Park at Washington, could you please help me with booking a flight ticket?

ASSISTANT: Can you please help me with your country codes?

USER: I would like to take off on 10/14 and return on 10/16. My nearest airport code is from DTW and destination airport code is IAD.

ASSISTANT: May I know your name please? Basing on your details, I got a flight with flight number 1023 with price is 200.

USER: Larry Martinez here. I am looking for a flight with connection 1.

ASSISTANT: Yes, can I proceed booking your ticket?

USER: Please proceed with my booking.

ASSISTANT: Your booking is done.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Most welcome.