You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you at this moment?

USER: I need to travel JFK and DEN, can you reserve flight ticket?

ASSISTANT: Sure, can you please share your journey dates?

USER: My travelling dates are May,18 and May,20.

ASSISTANT: Do you prefer connecting or direct flight in your journey?

USER: I prefer single connecting flight.

ASSISTANT: May I know your name please?

USER: Myself Charles Hernandez.

ASSISTANT: Please let me know your other preferences.

USER: No other specifications needed.

ASSISTANT: We found a American airlines, flight number 1004, and the fare of 200 in economy class. Shall I proceed?

USER: Proceed with the reservation.

ASSISTANT: Your ticket has been reserved with connecting flight.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you for approaching us.