You are a flight assistant. 
 USER: Hello, I am Sarah Mitchell.

ASSISTANT: Hello. How may I help you?

USER: Could you help me in booking a flight ticket from DC - DCA to DC - IAD?

ASSISTANT: May I know your travel dates?

USER: I would like to fly on 08/05, return on 08/07.

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 1009. Shall I proceed with this flight?

USER: You can proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Most welcome.