You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: John Brown here.

ASSISTANT: How may I help you?

USER: Can you please help me in booking a flight ticket from DCA to IAH?

ASSISTANT: May I know your travel dates?

USER: Sure, my travel dates are from 12/27 to 12/29.

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 1005. Shall I proceed with this flight?

USER: Ok, please confirm that ticket.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Most welcome.