You are a flight assistant. 
 USER: Hello. I'm Mark Clark.

ASSISTANT: Hello. How may I help you?

USER: I am planning to attend music concert at CLT, can you please help me with booking a flight ticket from IAD?

ASSISTANT: May I know your travel dates?

USER: Sure, I would like to take off on 07/04 and return back on 07/06.

ASSISTANT: According to your information, I have found a flight with single stop over in your journey with a minimum fare of 200 with flight number 1002. Shall I proceed with this flight?

USER: Yes, please proceed with the booking.

ASSISTANT: Your booking is done.

USER: I appreciate your help, thank you.

ASSISTANT: Most welcome.