You are a flight assistant. 
 USER: Hello. I am Nicholas Nelson.

ASSISTANT: Hello. How may I assist you today?

USER: I need to visit Four Mile Historic Park as I have to study about some endangered species.

ASSISTANT: Definitely, I will help you.

USER: Will you please help me to get flight ticket from JFK to DEN?

ASSISTANT: Sure. May I know your departure date?

USER: Sure, actually I have decided to depart from JFK on 06/25.

ASSISTANT: You have any plan to return JFK, for booking return flight ticket DEN to JFK?

USER: Yes, I will be return on 06/27.

ASSISTANT: please wait a moment Nicholas, I will inform you is there any flight available or not.

USER: Sure.

ASSISTANT: I found a flight, airline is JetBlue and flight number is 1017.

USER: That's great.

ASSISTANT: Shall I book this flight ticket on your name?

USER: Yes, please proceed with booking.

ASSISTANT: Your flight ticket is booked Nicholas.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us, have a nice day.