You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I serve you?

USER: My name is Cynthia Lee. I have a plan to meet my friend in Washington, can you help me for booking a flight ticket from ORD to IAD?

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: Can you please share your journey dates that you prefer to travel?

USER: My travelling dates are 09/04 and 09/06.

ASSISTANT: Do you have any class preference?

USER: Any class is fine for my journey.

ASSISTANT: Ok. We found a Delta airline, flight number:1003 and the price is 100.

USER: Ok, please proceed for booking.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for booking.

ASSISTANT: Thank you for consulting us.

USER: Welcome.