You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Sarah Nelson here. I want to visit Chicago from IAD to ORD. Can you make a reservation for me?

ASSISTANT: May I know your travel dates?

USER: Sure, my itinerary dates are on 10/10 and return on 10/12.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 100 with flight number 1000. Shall I proceed with this flight?

USER: Yes, you can proceed with the ticket booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.