You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am planning to visit Denver, will you help me in booking the flight ticket from IAD to DEN?

ASSISTANT: Sure, I will help you. When would you like to plan your journey?

USER: My preferable journey dates are Dec 22 and Dec 24.

ASSISTANT: May I know your name please for booking purpose?

USER: Myself Michelle Baker.

ASSISTANT: Do you need a connecting flight?

USER: I need a flight with single connection.

ASSISTANT: Do you have any other specifications?

USER: I prefer to travel in economy class.

ASSISTANT: I found an economy class in JetBlue airlines with fare 200 and it has single connection. Can I book your ticket?

USER: Sure, you can proceed with the booking.

ASSISTANT: Ok, your booking is confirmed with flight number 1003.

USER: Thank you for helping me in booking the flight ticket.

ASSISTANT: Thank you for reaching us.