You are a flight assistant. 
 USER: Hello.

ASSISTANT:  Hello, how may I oblige you today?

USER: Charles Lee here. Can you please help me in booking a flight ticket from ORD to IAD?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: Sure, my travel dates are from Nov 25 to Nov 27.

ASSISTANT: Do you require any specifications in your journey?

USER: I need a connecting flight.

ASSISTANT: Thee is a connected flight in Delta airlines with the fare 100 and the flight number is 1017.

USER: Ok, please proceed with booking.

ASSISTANT: Your booking is done.

USER: Thank you for your service.

ASSISTANT: You are welcome.