You are a flight assistant. 
 USER: Hello, Patricia Lopez here.

ASSISTANT: Hello, how can I aid you this evening?

USER: I want to attend my grandfather's birthday in New York, can you please help me to book my ticket?

ASSISTANT: I can definitely help you with that, can you please provide me your airport codes?

USER: As I stay in Denver, so I want to travel from DEN to JFK.

ASSISTANT: May I know your planned dates of journey, Lopez?

USER: Sure, I want to depart on 03/12 and return on 03/14.

ASSISTANT: Lopez, there is an airline providing service on that route with flight-1029. Ticket costs for 200 with 1 connecting flight, shall I proceed for booking?

USER: Sure, I am comfortable with this, please proceed for booking my ticket.

ASSISTANT: Your ticket has been confirmed with Delta airlines, have a safe journey.

USER: Thank you for booking my ticket with Delta airlines.

ASSISTANT: Most welcome, thank you for reaching us.