You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am David Carter. I am planning to book a ticket from DEN to MCO. Can you please help me out?

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

USER: I am planning to travel on July 10 and return back on July 12.

ASSISTANT: Do you have any class preference?

USER: Yes, I am looking for a connecting flight.

ASSISTANT: David Carter, there is a flight available with price 200 and the connection is 1 with Frontier airline. Would you like me to proceed with the booking?

USER: That's  fine, please proceed the booking.

ASSISTANT: Your booking is confirmed with 1019 flight number.

USER: Thank you for your service.

ASSISTANT: You are welcome. Thank you for contacting us.