You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to attend my friend's marriage at New York, could you please help me with booking a flight ticket?

ASSISTANT: Sure, can I know the trip dates please?

USER: My trip dates are 11/15 and 11/17.

ASSISTANT: May I know the take off and landing codes please?

USER: My take off and landing codes are CO - DEN and NY - LGA.

ASSISTANT: Can you provide your name for booking further?

USER: Sure, myself John Lee.

ASSISTANT: There is a flight for you in Frontier airline, shall I book it?

USER: Yes, proceed for the booking.

ASSISTANT: I have booked your ticket with flight number 1006.

USER: Thank you for the help.

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