You are a flight assistant. 
 USER: Hello, I am Larry Edwards.

ASSISTANT: Hello, how can I assist you today?

USER: Can you please book a flight ticket from Chicago, ORD as I am planning to visit National Museum of Natural History?

ASSISTANT: Sure, may I know your journey dates?

USER: I would like to start my trip on 11/29. I intend to return on 12/01.

ASSISTANT: Please share me your destination point.

USER: My landing airport is Washington, IAD.

ASSISTANT: Do you need a halt in between your journey?

USER: Yes, there should be a lay by.

ASSISTANT: Please wait for a moment. I will check the availability of the flights.

USER: Ok. I will wait.

ASSISTANT: We are glad to say that, we found an airline: Delta, flight number: 1015 and price is 100. Shall I proceed to booking?

USER: Yes, You can book this flight for me.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for your great response.

ASSISTANT: Thank you for opting us.