You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I want to fly to Washington to visit Olympic National Park, can you please help me to book a flight ticket with single connection?

ASSISTANT: Sure, may I know your airport codes please?

USER: AUS and IAD are my exact airport codes.

ASSISTANT: Can I know your trip dates please?

USER: Sure, I am planning to start my journey on Apr 30th and my return date will be on May 2nd.

ASSISTANT: Do you have any other requirements?

USER: I don't have any other preferences.

ASSISTANT: Can I know your name please?

USER: I am Joseph Walker.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting and we have found a flight in economy class with 1 connection in Delta airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: You can reserve it.

ASSISTANT: Ok, your ticket is booked with the flight number 1001.

USER: Thank you.

ASSISTANT: Most welcome.