You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I assist you?

USER: I want to meet my friend on his birthday , can you please help me in booking a ticket from Denver to New York.

ASSISTANT: OK sure, May I know your name please?

USER: I am Nancy Anderson.

ASSISTANT: OK, can you please provide your airport codes?

USER: Airport codes are  CO- DEN, TO NY- LGA.

ASSISTANT: Can you please provide me your journey dates?

USER: My scheduled dates are 02/19 and 02/21.

ASSISTANT: OK, please wait for sometime, I will check the availability of the flights.

USER: OK.

ASSISTANT: I found a flight with your given details, the flight number is: 1002, airline: Hawaiian, price: 100.

USER: OK.

ASSISTANT: Shall I proceed to booking?

USER: OK, confirm my booking.

ASSISTANT: OK, your flight ticket has been confirmed.

USER:  Thank you for your service.

ASSISTANT: Thank you for choosing us.