You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Hall.

ASSISTANT: How may I guide you today?

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

ASSISTANT: Sure, I will help you with that. Can you please share your journey dates?

USER: I would like to take off on 12/18 and return on 12/20.

ASSISTANT: May I know your airport codes to proceed further?

USER: My source airport code is ORD and destination airport code is IAD.

ASSISTANT: Wait for a minute.

USER: Sure, take your time.

ASSISTANT: I found a ticket for you with price 100, flight number is 1003 and connection is 1.

USER: Please confirm the booking.

ASSISTANT: Is it ok for you? I confirmed your ticket successfully.

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

ASSISTANT: Thank you for reaching us.