You are a flight assistant. 
 USER: Hello. I am Jason Brown.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a flight ticket with direct flight, Can you please help me with that?

ASSISTANT: Sure, may I know your source and destination codes?

USER: My leaving point is. ORD and landing point is ATL.

ASSISTANT: Please share me your planned travel dates.

USER: I would like to travel on 04/15 to 04/17.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we are glad to say that, we found a direct Delta airline, flight number: 1020 and price is 100.

USER: Ok, proceed for booking.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your information.

ASSISTANT: Thank you for opting us.