You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Rodriguez here.

ASSISTANT: How can I help you Nancy?

USER: I need your help in booking of a flight ticket from DCA to EWR for an important business meeting, can you please help me out with booking of a flight ticket on those locations?

ASSISTANT: Could you please tell me your travel dates?

USER: Sure, I am planning to leave on 12/18 and please book my return ticket on 12/20.

ASSISTANT: Delta airlines is available for you with price 100.

USER: If it is single connected flight, you can proceed with booking.

ASSISTANT: Your ticket is booked in 1001 flight with 1 connection.

USER: Thank you for your help in booking of my ticket, have a nice day.

ASSISTANT: Thank you for reaching us.

USER: Welcome.