You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you book a flight ticket from Denver DEN to LGA. Can you find a flight ticket for me?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Thank you. Ok, my planned journey dates are on Dec 12 and return on Dec 14.

ASSISTANT: Do you need any break?

USER: Yes, I need a single connecting flight to travel.

ASSISTANT: May I know your name?

USER: Ok, my name is Katherine Hill.

ASSISTANT: Is there any other specifications?

USER: No, thanks for asking.

ASSISTANT: We found a connecting flight with an UA airlines, flight number:1020.

USER: Ok, you can proceed with the ticket booking.

ASSISTANT: Your flight ticket has been reserved with an economy class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.