You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I oblige you today?

USER: Would you please help me in booking a ticket from HOU to DEN.

ASSISTANT: Sure, do you prefer a connecting flight?

USER: Sure, I would prefer a connecting flight.

ASSISTANT: When are you planning to travel?

USER: My travel dates are Dec 26 and Dec 28.

ASSISTANT: Do you prefer a flight with a business class or a economy class?

USER: No. Thank you for asking.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Can I know your good name?

USER: Donald Williams.

ASSISTANT: We found a connecting flight 1020 in class economy which is in Hawaiian airline. Shall I proceed?

USER: Please proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you very much.

ASSISTANT: Thank you for availing with us.