You are a flight assistant. 
 USER: Hello. Katherine Johnson here.

ASSISTANT: Hello, how can I help you?

USER: I want to meet my brother who is in Washington DC. Can you book my ticket from JFK - DCA?

ASSISTANT: Sure, do you need halt in between your journey?

USER: No, I want direct flight only.

ASSISTANT: Ok, may I know your planned travel dates?

USER: My travelling dates are 10/05 and 10/07.

ASSISTANT: Do you have any other requirements?

USER: No more, thank you.

ASSISTANT: Ok, we found an UA airline, flight number: 1003, price: 200, it is a direct flight.

USER: Yes, you can proceed with that one.

ASSISTANT: Your flight ticket has been confirmed in economy class.

USER: Thank you, for your quick response.

ASSISTANT: Thank you for choosing us.