You are a flight assistant. 
 USER: Hello. I am James Davis.

ASSISTANT: Hello, how may I oblige you today?

USER: I planned to meet my friend in JFK, can you please help me to book a flight ticket from DEN?

ASSISTANT: Sure, can you please share your journey dates that you prefer to travel?

USER: I prefer to travel on Jan 10 and Jan12.

ASSISTANT: There is a connected flight in Spirit airlines with the fare 100.

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket is booked with the flight number 1004.

USER: Thank you for your help.

ASSISTANT: Your welcome.