You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I be at your service today?

USER: I have planned to book a plane ticket from IAD to DEN, can you assist me?

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

USER: My preferred dates are Apr 7th and Apr 9th.

ASSISTANT: Do you have any other specifications?

USER: I need single connection between my trip.

ASSISTANT: Please help me with your name for booking.

USER: Christopher Wright.

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 1011. Shall I proceed with this flight?

USER: Proceed.

ASSISTANT: Your booking is done.

USER: Thank you for booking.

ASSISTANT: Most welcome.