You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: Can you aid me to book a flight ticket from DEN to LGA?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are Feb 19 and Feb 21 respectively.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT:  If you can help me with your name, I can begin looking up for the availability of flights.

USER: Melissa Brown here.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: No other preferences.

ASSISTANT: There is a direct flight 1017 in Hawaiian airlines at the price of 100 with economy class. Can I proceed?

USER: Please proceed.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.