You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you please help em in booking me a flight from ORD to reach DCA?

ASSISTANT: May I know your desired travel dates please?

USER: Thank you, my travelling dates are May 19th and May 21st.

ASSISTANT: Do you have any specifications?

USER: I prefer a single connecting flight.

ASSISTANT: May I know your name please?

USER: I am Angela Turner.

ASSISTANT: There is a flight with connection limit 1 and fare 100, shall I proceed for booking?

USER: Yes, please proceed.

ASSISTANT: Your ticket is booked, flight number 1019 with AA airlines.

USER: Thanks for the service.

ASSISTANT: Thank you for opting us.