You are a flight assistant. 
 USER: Hi, I am Stephen Carter.

ASSISTANT: Hello, how may I be your helping hand?

USER: As I got an invitation to attend party,Can you please book a flight from New York JFK to Denver DEN?

ASSISTANT: Sure, please forward your depart and arrival dates.

USER: I am willing to travel on 04/15 to 04/17.

ASSISTANT: Thanks for your details, please wait.

USER: Ok.

ASSISTANT: There is a flight on AA airlines, flight number is 1008 with fare 100.

USER: Please proceed to book.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you.

ASSISTANT: Thanks for reaching us.