You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Anthony Evans here.

ASSISTANT: How may I serve you for the day?

USER: I want to book a flight ticket from DEN to IAD. Can you help me in that?

ASSISTANT: Sure, I am perky to help you. When are you planning to make your journey?

USER: My trip dates are Sept 3 to Sept 5.

ASSISTANT: Ok, do you have any other specifications?

USER: I need halt in between journey.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a direct flight with Southwest airline in economy class. Is it ok for you?

USER: You can proceed.

ASSISTANT: Your ticket has been booked with a fare of 100 and the flight number is 1009.

USER: Thank you for booking.

ASSISTANT: Thank you for contacting us.