You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: Can you please help me in booking a flight ticket from IAD to DEN?

ASSISTANT: Sure, I will help you. Can you please tell me your journey dates?

USER: I want to fly on Feb 20 and return on Feb 22.

ASSISTANT: Ok, do you have any specification regarding the airlines?

USER: I need a single connection.

ASSISTANT: Can you please share your other preferences?

USER: I don't have any other preferences.

ASSISTANT: I need your name to proceed further, can you please provide it?

USER: Myself Carol Young.

ASSISTANT: Ok, please allow me sometime to check the flight availability.

USER: Ok.

ASSISTANT: An economy class flight is available in this route which is having a single stop over and the ticket cost is 100. Shall I reserve a flight ticket?

USER: You can proceed to booking.

ASSISTANT: As per your request, I have confirmed your ticket with the flight-1004.

USER: Thank you.

ASSISTANT: Thank you for contacting us.