You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Ryan Parker. Can you help me in booking from IAD to DEN, as I need to attend my sister wedding?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are 04/26 to 04/28.

ASSISTANT: Please give me a moment. There is a flight with price 200 and the connections 1 is available.

USER: You can book it.

ASSISTANT: Your ticket is booked. The flight number is 1008 and the airline is Spirit.

USER: Thank you.

ASSISTANT: Welcome, have a great day.