You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: Could you please book a flight ticket from DEN to DCA?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: My trip dates are Apr 01 and Apr 03.

ASSISTANT: Do you have any other specifications?

USER: I need a connecting flight.

ASSISTANT: Please help me with your name for booking.

USER: I am Samuel Lee.

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 1008. Shall I proceed with this flight?

USER: Ok, proceed. Thank you.

ASSISTANT: Your booking is done.

USER: Thank you for booking my ticket.

ASSISTANT: Most welcome.