You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I aid you at this moment?

USER: I am Eric Harris, can you help me to book a flight with 1 connection from DEN?

ASSISTANT: Sure, please tell me your departure and arrival travelling dates.

USER: My travelling dates are 01/01 and 01/03.

ASSISTANT: Ok, do you prefer  business class or economy class?

USER: I need a economy class ticket.

ASSISTANT: Ok, may I know your destination airport code?

USER: Please book a evening flight on my departure date and my destination airport code is PHX.

ASSISTANT: Ok, please wait for few minutes.

USER: Ok.

ASSISTANT:  We found a Spirit airline with fare of 100 and a lay by in between the journey matches your schedule. Shall I proceed with booking?

USER: Proceed with booking.

ASSISTANT: Your ticket has been confirmed with economy class and  flight number 1021 and departure is at 2:00 AM and arrival is at 17:00 PM.

USER: Thank you.

ASSISTANT: Thank you for reaching us.