You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: My name is Steven Johnson. Can you help me to book a flight ticket to DEN?

ASSISTANT: May I know your travel dates?

USER: Yes, I want to start my journey on 02/27 and return date is 02/29.

ASSISTANT: Please mention your source?

USER: My source airport code is IAD.

ASSISTANT: Here is a flight with 1 connection and price is 200. Can I proceed it?

USER: Please book the flight for me.

ASSISTANT: Your ticket has been booked with 1005 flight number in Spirit airlines.

USER: Thank you for your assistance.

ASSISTANT: Thank you for reaching us.